diff --git a/BackEnd/administration/filters.py b/BackEnd/administration/filters.py
index 14d0b69e..2ed3235e 100644
--- a/BackEnd/administration/filters.py
+++ b/BackEnd/administration/filters.py
@@ -21,8 +21,8 @@ class UsersFilter(FilterSet):
     company_name = filters.CharFilter(
         field_name="profile__name", lookup_expr="icontains"
     )
-    registration_date = filters.CharFilter(
-        field_name="profile__created_at", lookup_expr="icontains"
+    registration_date = filters.DateFilter(
+        field_name="profile__created_at",
     )
 
     def is_deleted_filter(self, queryset, name, value):
@@ -60,8 +60,8 @@ class ProfilesFilter(FilterSet):
     official_name = filters.CharFilter(lookup_expr="icontains")
     phone = filters.CharFilter(lookup_expr="icontains")
     address = filters.CharFilter(lookup_expr="icontains")
-    created_at = filters.DateFilter(lookup_expr="icontains")
-    updated_at = filters.DateFilter(lookup_expr="icontains")
+    created_at = filters.DateFilter()
+    updated_at = filters.DateFilter()
 
     ordering = filters.OrderingFilter(
         fields=(
diff --git a/BackEnd/administration/serializers.py b/BackEnd/administration/serializers.py
index b5d7932f..e4a26f5a 100644
--- a/BackEnd/administration/serializers.py
+++ b/BackEnd/administration/serializers.py
@@ -1,14 +1,16 @@
 from django.contrib.auth import get_user_model
 from rest_framework import serializers
+from rest_framework.validators import UniqueValidator
 from utils.administration.feedback_category import FeedbackCategory
 from authentication.models import CustomUser
 from profiles.models import (
     Profile,
-    Region, Activity,
+    Region,
     Category,
+    Activity
 )
-from utils.administration.profiles.profiles import get_company_type_as_string, get_representative_as_string, \
-    get_business_entity_as_string
+from utils.administration.profiles.profiles import format_company_type, format_representative, \
+    format_business_entity
 from utils.administration.create_password import generate_password
 from utils.administration.send_email import send_email_about_admin_registration
 from .models import AutoModeration, ModerationEmail
@@ -145,17 +147,14 @@ class Meta:
             "representative",
         )
 
-    @staticmethod
-    def get_company_type(obj) -> str:
-        return get_company_type_as_string(obj)
+    def get_company_type(self, obj) -> str:
+        return format_company_type(obj)
 
-    @staticmethod
-    def get_representative(obj):
-        return get_representative_as_string(obj)
+    def get_representative(self, obj) -> str:
+        return format_representative(obj)
 
-    @staticmethod
-    def get_business_entity(obj):
-        return get_business_entity_as_string(obj)
+    def get_business_entity(self, obj) -> str:
+        return format_business_entity(obj)
 
 
 class AdminCompanyDetailSerializer(serializers.ModelSerializer):
diff --git a/BackEnd/utils/administration/profiles/profiles.py b/BackEnd/utils/administration/profiles/profiles.py
index f1d53186..1c3c06b6 100644
--- a/BackEnd/utils/administration/profiles/profiles.py
+++ b/BackEnd/utils/administration/profiles/profiles.py
@@ -1,4 +1,4 @@
-def get_company_type_as_string(obj):
+def format_company_type(obj):
     if obj.is_startup and obj.is_registered:
         return "Компанія і стартап"
     if obj.is_registered:
@@ -8,13 +8,13 @@ def get_company_type_as_string(obj):
     return None
 
 
-def get_representative_as_string(obj):
+def format_representative(obj):
     if obj.person:
         return f'{obj.person.name} {obj.person.surname}'
     return None
 
 
-def get_business_entity_as_string(obj):
+def format_business_entity(obj):
     if obj.is_fop:
         return "ФОП"
     return "Юридична особа"