diff --git a/adrotate-statistics.php b/adrotate-statistics.php
index b23b3e8..267b608 100644
--- a/adrotate-statistics.php
+++ b/adrotate-statistics.php
@@ -13,10 +13,10 @@
  Name:      adrotate_get_stats
  Purpose:   Quick check for the latest number of clicks and impressions
 -------------------------------------------------------------*/
-function adrotate_get_stats($ad, $when = 0, $until = 0) {
+function adrotate_get_stats($ad_id, $when = 0, $until = 0) {
 	global $wpdb;
 
-	$stats = $wpdb->get_row("SELECT SUM(`clicks`) as `clicks`, SUM(`impressions`) as `impressions` FROM `{$wpdb->prefix}adrotate_stats` WHERE `ad` = {$ad} AND `thetime` >= {$when} AND `thetime` <= {$until} GROUP BY `ad` ORDER BY `ad` ASC;", ARRAY_A);
+	$stats = $wpdb->get_row("SELECT SUM(`clicks`) as `clicks`, SUM(`impressions`) as `impressions` FROM `{$wpdb->prefix}adrotate_stats` WHERE `ad` = {$ad_id} AND `thetime` >= {$when} AND `thetime` <= {$until} GROUP BY `ad` ORDER BY `ad` ASC;", ARRAY_A);
 
 	if(empty($stats['clicks'])) $stats['clicks'] = '0';
 	if(empty($stats['impressions'])) $stats['impressions'] = '0';
@@ -62,7 +62,7 @@ function adrotate_date_start($what) {
  Name:      adrotate_count_impression
  Purpose:   Count Impressions where needed
 -------------------------------------------------------------*/
-function adrotate_count_impression($ad, $group = 0, $blog_id = 0) {
+function adrotate_count_impression($ad_id, $group_id = 0, $blog_id = 0) {
 	global $wpdb, $adrotate_config;
 
 	$now = current_time('timestamp');
@@ -77,16 +77,16 @@ function adrotate_count_impression($ad, $group = 0, $blog_id = 0) {
 	$impression_timer = $now - $adrotate_config['impression_timer'];
 
 	if($remote_ip != 'unknown' AND !empty($remote_ip)) {
-		$saved_timer = $wpdb->get_var($wpdb->prepare("SELECT `timer` FROM `{$wpdb->prefix}adrotate_tracker` WHERE `ipaddress` = '%s' AND `stat` = 'i' AND `bannerid` = %d ORDER BY `timer` DESC LIMIT 1;", $remote_ip, $ad));
+		$saved_timer = $wpdb->get_var($wpdb->prepare("SELECT `timer` FROM `{$wpdb->prefix}adrotate_tracker` WHERE `ipaddress` = '%s' AND `stat` = 'i' AND `bannerid` = %d ORDER BY `timer` DESC LIMIT 1;", $remote_ip, $ad_id));
 		if($saved_timer < $impression_timer AND adrotate_is_human()) {
-			$stats = $wpdb->get_var($wpdb->prepare("SELECT `id` FROM `{$wpdb->prefix}adrotate_stats` WHERE `ad` = %d AND `group` = %d AND `thetime` = {$today};", $ad, $group));
+			$stats = $wpdb->get_var($wpdb->prepare("SELECT `id` FROM `{$wpdb->prefix}adrotate_stats` WHERE `ad` = %d AND `group` = %d AND `thetime` = {$today};", $ad_id, $group_id));
 			if($stats > 0) {
 				$wpdb->query("UPDATE `{$wpdb->prefix}adrotate_stats` SET `impressions` = `impressions` + 1 WHERE `id` = {$stats};");
 			} else {
-				$wpdb->insert($wpdb->prefix.'adrotate_stats', array('ad' => $ad, 'group' => $group, 'thetime' => $today, 'clicks' => 0, 'impressions' => 1));
+				$wpdb->insert($wpdb->prefix.'adrotate_stats', array('ad' => $ad_id, 'group' => $group_id, 'thetime' => $today, 'clicks' => 0, 'impressions' => 1));
 			}
 
-			$wpdb->insert($wpdb->prefix."adrotate_tracker", array('ipaddress' => $remote_ip, 'timer' => $now, 'bannerid' => $ad, 'stat' => 'i'));
+			$wpdb->insert($wpdb->prefix."adrotate_tracker", array('ipaddress' => $remote_ip, 'timer' => $now, 'bannerid' => $ad_id, 'stat' => 'i'));
 		}
 	}
 
@@ -109,9 +109,9 @@ function adrotate_impression_callback() {
 
 	$meta = esc_attr($meta);
 	// Don't use $impression_timer - It's for impressions used in javascript
-	list($ad, $group, $blog_id, $impression_timer) = explode(",", $meta, 4);
-	if(is_numeric($ad) AND is_numeric($group) AND is_numeric($blog_id)) {
-		adrotate_count_impression($ad, $group, $blog_id);
+	list($ad_id, $group_id, $blog_id, $impression_timer) = explode(",", $meta, 4);
+	if(is_numeric($ad_id) AND is_numeric($group_id) AND is_numeric($blog_id)) {
+		adrotate_count_impression($ad_id, $group_id, $blog_id);
 	}
 
 	die();
@@ -133,9 +133,9 @@ function adrotate_click_callback() {
 
 	$meta = esc_attr($meta);
 	// Don't use $impression_timer - It's for impressions used in javascript
-	list($ad, $group, $blog_id, $impression_timer) = explode(",", $meta, 4);
+	list($ad_id, $group_id, $blog_id, $impression_timer) = explode(",", $meta, 4);
 
-	if(is_numeric($ad) AND is_numeric($group) AND is_numeric($blog_id)) {
+	if(is_numeric($ad_id) AND is_numeric($group_id) AND is_numeric($blog_id)) {
 		if($blog_id > 0 AND adrotate_is_networked()) {
 			$current_blog = $wpdb->blogid;
 			switch_to_blog($blog_id);
@@ -148,29 +148,29 @@ function adrotate_click_callback() {
 			$today = adrotate_date_start('day');
 			$click_timer = $now - $adrotate_config['click_timer'];
 
-			$saved_timer = $wpdb->get_var($wpdb->prepare("SELECT `timer` FROM `{$wpdb->prefix}adrotate_tracker` WHERE `ipaddress` = '%s' AND `stat` = 'c' AND `bannerid` = %d ORDER BY `timer` DESC LIMIT 1;", $remote_ip, $ad));
+			$saved_timer = $wpdb->get_var($wpdb->prepare("SELECT `timer` FROM `{$wpdb->prefix}adrotate_tracker` WHERE `ipaddress` = '%s' AND `stat` = 'c' AND `bannerid` = %d ORDER BY `timer` DESC LIMIT 1;", $remote_ip, $ad_id));
 			if($saved_timer < $click_timer) {
-				$stats = $wpdb->get_var($wpdb->prepare("SELECT `id` FROM `{$wpdb->prefix}adrotate_stats` WHERE `ad` = %d AND `group` = %d AND `thetime` = {$today};", $ad, $group));
+				$stats = $wpdb->get_var($wpdb->prepare("SELECT `id` FROM `{$wpdb->prefix}adrotate_stats` WHERE `ad` = %d AND `group` = %d AND `thetime` = {$today};", $ad_id, $group_id));
 				if($stats > 0) {
 					$wpdb->query("UPDATE `{$wpdb->prefix}adrotate_stats` SET `clicks` = `clicks` + 1 WHERE `id` = {$stats};");
 				} else {
-					$wpdb->insert($wpdb->prefix.'adrotate_stats', array('ad' => $ad, 'group' => $group, 'thetime' => $today, 'clicks' => 1, 'impressions' => 1));
+					$wpdb->insert($wpdb->prefix.'adrotate_stats', array('ad' => $ad_id, 'group' => $group_id, 'thetime' => $today, 'clicks' => 1, 'impressions' => 1));
 				}
 
-				$wpdb->insert($wpdb->prefix.'adrotate_tracker', array('ipaddress' => $remote_ip, 'timer' => $now, 'bannerid' => $ad, 'stat' => 'c'));
+				$wpdb->insert($wpdb->prefix.'adrotate_tracker', array('ipaddress' => $remote_ip, 'timer' => $now, 'bannerid' => $ad_id, 'stat' => 'c'));
 			}
 
 			// Advertising budget
-			$wpdb->query("UPDATE `{$wpdb->prefix}adrotate` SET `budget` = `budget` - `crate` WHERE `id` = {$ad} AND `crate` > 0;");
+			$wpdb->query("UPDATE `{$wpdb->prefix}adrotate` SET `budget` = `budget` - `crate` WHERE `id` = {$ad_id} AND `crate` > 0;");
 		}
 
 		if($blog_id > 0 AND adrotate_is_networked()) {
 			switch_to_blog($current_blog);
 		}
 
-		unset($remote_ip, $track, $meta, $ad, $group, $remote, $banner);
+		unset($remote_ip, $track, $meta, $ad_id, $group_id, $remote, $banner);
 	}
 
 	die();
 }
-?>
\ No newline at end of file
+?>
diff --git a/adrotate.php b/adrotate.php
index 49a87b7..571b53f 100644
--- a/adrotate.php
+++ b/adrotate.php
@@ -1,12 +1,12 @@
 <?php
 /*
 Plugin Name: AdRotate Banner Manager
-Plugin URI: https://ajdg.solutions/product/adrotate-banner-manager/?mtm_campaign=adrotate&mtm_keyword=plugin_info
+Plugin URI: https://ajdg.solutions/product/adrotate-banner-manager/
 Author: Arnan de Gans
-Author URI: https://www.arnan.me/?mtm_campaign=adrotate&mtm_keyword=plugin_info
+Author URI: https://www.arnan.me/
 Description: Manage all your adverts with all the features you need while keeping things simple.
 Text Domain: adrotate
-Version: 5.13.4
+Version: 5.13.5
 License: GPLv3
 */
 
diff --git a/dashboard/settings/maintenance.php b/dashboard/settings/maintenance.php
index 72916f4..1c63c41 100644
--- a/dashboard/settings/maintenance.php
+++ b/dashboard/settings/maintenance.php
@@ -13,7 +13,7 @@
 <form name="settings" id="post" method="post" action="admin.php?page=adrotate-settings&tab=maintenance">
 <?php wp_nonce_field('adrotate_settings','adrotate_nonce_settings'); ?>
 <h2><?php _e("Maintenance", 'adrotate'); ?></h2>
-<table class="form-table">			
+<table class="form-table">
 	<tr>
 		<th valign="top"><?php _e("Check adverts", 'adrotate'); ?></th>
 		<td>
@@ -25,7 +25,7 @@
 </table>
 
 <h3><?php _e("Status and Versions", 'adrotate'); ?></h3>
-<table class="form-table">			
+<table class="form-table">
 	<tr>
 		<th valign="top"><?php _e("Current status of adverts", 'adrotate'); ?></th>
 		<td colspan="3"><?php _e("Normal", 'adrotate'); ?>: <?php echo $advert_status['normal']; ?>, <?php _e("Error", 'adrotate'); ?>: <?php echo $advert_status['error']; ?>, <?php _e("Expired", 'adrotate'); ?>: <?php echo $advert_status['expired']; ?>, <?php _e("Expires Soon", 'adrotate'); ?>: <?php echo $advert_status['expiressoon']; ?>, <?php _e("Unknown", 'adrotate'); ?>: <?php echo $advert_status['unknown']; ?>.</td>
@@ -52,10 +52,10 @@
 		<th width="15%"><?php _e("Unfiltered HTML", 'adrotate'); ?></th>
 		<td colspan="3">
 			<?php
-			if(defined('DISALLOW_UNFILTERED_HTML') && !DISALLOW_UNFILTERED_HTML) { 
+			if(defined('DISALLOW_UNFILTERED_HTML') && !DISALLOW_UNFILTERED_HTML) {
 				echo "<span style=\"color:#009900;\">".__("Allowed", 'adrotate')."</span>";
 			} else {
-				echo "<span style=\"color:#CC2900;\">".__("Your website's current setup does not allow for unfiltered code to be used in adverts.", 'adrotate')."</span><br />".__("This is required for javascript adverts to work. To enable this you need to set the DISALLOW_UNFILTERED_HTML definition to 'true' in your wp-config.php file.", 'adrotate')." <a href=\"https://ipstack.com/product\" target=\"_blank\">".__("More info", 'adrotate')."</a>";
+				echo "<span style=\"color:#CC2900;\">".__("Your website's current setup does not allow for unfiltered code to be used in adverts.", 'adrotate')."</span><br />".__("This is required for javascript adverts to work. To enable this you need to set the DISALLOW_UNFILTERED_HTML definition to 'false' in your wp-config.php file.", 'adrotate')." <a href=\"https://ipstack.com/product\" target=\"_blank\">".__("More info", 'adrotate')."</a>";
 			}
 			?>
 		</td>
@@ -79,25 +79,25 @@
 
 <h2><?php _e("Internal Versions", 'adrotate'); ?></h2>
 <span class="description"><?php _e("Unless you experience database issues or a warning shows below, these numbers are not really relevant for troubleshooting. Support may ask for them to verify your database status.", 'adrotate'); ?></span>
-<table class="form-table">			
+<table class="form-table">
 	<tr>
 		<th width="15%" valign="top"><?php _e("AdRotate version", 'adrotate'); ?></th>
 		<td>
-			<?php 
+			<?php
 			echo __("Current:", 'adrotate')."<span style=\"color:#009900;\">".$adrotate_version['current']."</span>";
-			if($adrotate_version['current'] != ADROTATE_VERSION) { 
-				echo "<span style=\"color:#CC2900;\">".__("Should be:", 'adrotate')." ".ADROTATE_VERSION."</span>"; 
-			} 
+			if($adrotate_version['current'] != ADROTATE_VERSION) {
+				echo "<span style=\"color:#CC2900;\">".__("Should be:", 'adrotate')." ".ADROTATE_VERSION."</span>";
+			}
 			?>
 			<br /><?php echo __("Previous:", 'adrotate')." ".$adrotate_version['previous']; ?>
 		</td>
 		<th width="15%" valign="top"><?php _e("Database version", 'adrotate'); ?></th>
 		<td>
-			<?php 
+			<?php
 			echo __("Current:", 'adrotate')."<span style=\"color:#009900;\">".$adrotate_db_version['current']."</span>";
-			if($adrotate_db_version['current'] != ADROTATE_DB_VERSION) { 
+			if($adrotate_db_version['current'] != ADROTATE_DB_VERSION) {
 				echo "<span style=\"color:#CC2900;\">".__("Should be:", 'adrotate')." ".ADROTATE_DB_VERSION."</span>";
-			} 
+			}
 			?>
 			<br /><?php echo __("Previous:", 'adrotate')." ".$adrotate_db_version['previous']; ?>
 		</td>
diff --git a/library/dashboard.css b/library/dashboard.css
index 3438791..1456788 100644
--- a/library/dashboard.css
+++ b/library/dashboard.css
@@ -12,6 +12,8 @@
 .stats_large { display: block; margin-bottom: 10px; margin-top: 10px; text-align: center; font-weight: bold; }
 .number_large {	margin: 20px; font-size: 28px; }
 
+.adrotate_inline_error { margin-left:10px; padding:5px; background-color:#c00; color:#fff; }
+
 /* Ad previews */
 .preview-wrapper { padding:0; width:50%; height:100px; border:3px solid; border-radius:10px; text-align:center; }
 .preview-inner { padding:20px 10px; display:inline-block; text-align:center; }
@@ -97,4 +99,4 @@
 .ui-datepicker-unselectable .ui-state-default { background: #f4f4f4; color: #b4b3b3; }
 .ui-datepicker-calendar td:first-child .ui-state-active { width: 29px; margin-left: 0; }
 .ui-datepicker-calendar td:last-child .ui-state-active { width: 29px; margin-right: 0; }
-.ui-datepicker-calendar tr:last-child .ui-state-active { height: 29px; margin-bottom: 0; }
\ No newline at end of file
+.ui-datepicker-calendar tr:last-child .ui-state-active { height: 29px; margin-bottom: 0; }
diff --git a/library/uploader-hook.js b/library/uploader-hook.js
index 3dcbd68..a2e4994 100644
--- a/library/uploader-hook.js
+++ b/library/uploader-hook.js
@@ -1,8 +1,7 @@
 /*
 use the Media Uploader from WordPress
-Version: 1.0
-Original code: Arnan de Gans
-Copyright: (c) 2020 Arnan de Gans
+Version: 1.1
+Copyright: (c) 2020-2024 Arnan de Gans
 */
 jQuery(document).ready(function(){
 	var custom_uploader;
@@ -12,11 +11,31 @@ jQuery(document).ready(function(){
 			custom_uploader.open();
 			return;
 		}
-		custom_uploader = wp.media.frames.file_frame = wp.media({title: 'Choose Banner',button: {text: 'Choose Banner'},multiple: false});
+		custom_uploader = wp.media.frames.file_frame = wp.media({
+			title: 'Choose Banner',
+			button: {text: 'Choose Banner'},
+			multiple: false,
+			library: { type: 'image/jpg, image/jpeg, image/gif, image/png, image/svg, image/webp, text/html, text/htm' }
+		});
 		custom_uploader.on('select', function() {
 			attachment = custom_uploader.state().get('selection').first().toJSON();
+    		// Check if selected mediafile is of wrong file type
+			allowedFiles = ['image/jpg', 'image/jpeg', 'image/gif', 'image/png', 'image/svg', 'image/webp', 'text/html', 'text/htm'];
+    		if(!allowedFiles.includes(attachment.mime)) {
+        		// Create error element
+        		const err_el = document.createElement('span');
+        		err_el.classList.add('adrotate_inline_error');
+        		err_el.innerHTML = 'File (' + attachment.mime + ') is not supported for ads.';
+        		// Check if error message does not exist yet and add it if it doesn't
+        		if(!document.querySelector('.adrotate-wrong-filetype')) {
+					jQuery('#adrotate_image_button').after(err_el);
+					jQuery('#adrotate_image').val('');
+				}
+        		return;
+    		}
+			jQuery('.adrotate-wrong-filetype').remove();
 			jQuery('#adrotate_image').val(attachment.url);
 		});
 		custom_uploader.open();
 	});
-});
\ No newline at end of file
+});
diff --git a/readme.txt b/readme.txt
index 603d4b1..4d2c88a 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1,13 +1,13 @@
 === AdRotate Banner Manager - The only ad manager you'll need ===
 Contributors: adegans
-Donate link: https://www.arnan.me/donate.html
-Tags: ads, banner manager, adsense, affiliate, banners
+Stable tag: 5.13.5
 Requires at least: 4.9
-Tested up to: 6.6.1
+Tested up to: 6.7
 CP requires at least: 1.0
-CP tested up to: 2.1.1
+CP tested up to: 2.2
 Requires PHP: 7.4
-Stable tag: 5.13.4
+Donate link: https://ajdg.solutions/product/adrotate-pro-single/
+Tags: ads, banner manager, adsense, affiliate, banners
 License: GPLv3
 
 Advertising made easy. Manage all your ads including Google Ads, Amazon banners and many more from your dashboard.
@@ -101,11 +101,15 @@ Installing AdRotate is super easy.
 - A new menu called "AdRotate" appears in the WordPress navigation.
 - From this menu you'll handle everything related to **AdRotate Banner Manager**.
 
-For more detailed instructions check out the [installation steps](https://ajdg.solutions/support/adrotate-manuals/installing-adrotate-on-your-website/?mtm_campaign=adrotate&mtm_kwd=readme) on the AdRotate website.
+For more detailed instructions check out the [installation steps](https://ajdg.solutions/support/adrotate-manuals/installing-adrotate-on-your-website/) on the AdRotate website.
 
 == Changelog ==
 
-For the full changelog check out the [development page](https://ajdg.solutions/support/adrotate-development/?mtm_campaign=adrotate&mtm_kwd=readme).
+For the full changelog check out the [development page](https://ajdg.solutions/support/adrotate-development/).
+
+= AdRotate 5.13.5 =
+* [update] WordPress media uploader only lists and allows relevant files
+* [fix] Text indicating unfiltered html suggesting the wrong setting
 
 = AdRotate 5.13.4 =
 * [fix] Image selection not kept when using the advert generator
@@ -195,7 +199,7 @@ For the full changelog check out the [development page](https://ajdg.solutions/s
 * [new] Automated trigger after updates to finish the update
 * [removed] wp_cache_set() for stats
 
-Be a Pro and get [AdRotate Professional](https://ajdg.solutions/product-category/adrotate-pro/?mtm_campaign=adrotate&mtm_kwd=readme) to support the plugin and get more features!
+Be a Pro and get [AdRotate Professional](https://ajdg.solutions/product-category/adrotate-pro/) to support the plugin and get more features!
 
 == Upgrade Notice ==
 
@@ -204,11 +208,11 @@ Enjoy this update with the latest tweaks and improvements for AdRotate Banner Ma
 == Frequently Asked Questions ==
 
 = How do I use AdRotate? =
-Take a look at the [user guides](https://ajdg.solutions/support/adrotate-manuals/?mtm_campaign=adrotate&mtm_kwd=readme).
+Take a look at the [user guides](https://ajdg.solutions/support/adrotate-manuals/).
 You can also post your questions on the [forum](https://ajdg.solutions/forums/forum/adrotate-for-wordpress/).
 
 = I need help with this plugin =
-The best place to ask your question is on my [support forum](https://ajdg.solutions/forums/forum/adrotate-for-wordpress/?mtm_campaign=adrotate&mtm_kwd=readme).
+The best place to ask your question is on my [support forum](https://ajdg.solutions/forums/forum/adrotate-for-wordpress/).
 The forum is checked daily and most questions are answered within hours.
 
 = Does AdRotate offer click tracking? =
@@ -222,11 +226,11 @@ Most ads, from any ad server, work without special tricks or tweaks.
 Yes!
 
 = This is cool, do you have more plugins? =
-Yep, check out my website [AJdG Solutions](https://ajdg.solutions/?mtm_campaign=adrotate&mtm_kwd=readme)
+Yep, check out my website [AJdG Solutions](https://ajdg.solutions/)
 
 = Why do some dashboard notifications look so ugly =
 If a dashboard notification misses its layout or looks out of shape try clearing your browser cache.
-Some ad blockers block parts of the AdRotate dashboard, check out this page to make an exception for your website in adblockers - [Whitelist your site](https://ajdg.solutions/support/adrotate-manuals/configure-adblockers-for-your-own-website/?mtm_campaign=adrotate&mtm_kwd=readme).
+Some ad blockers block parts of the AdRotate dashboard, check out this page to make an exception for your website in adblockers - [Whitelist your site](https://ajdg.solutions/support/adrotate-manuals/configure-adblockers-for-your-own-website/).
 
 = Is AdRotate compatible with Yoast SEO or other SEO plugins? =
 Yes, Yoast SEO, All-in-One SEO pack and all other SEO plugins work fine with AdRotate.