Download doesn't starts

[Iloveass1337]

I copy and paste video link, and nothing happens! Please, help

[shaked6540]

Sometimes youtube is blocking requests that it suspects are coming from apps like this. There isn't much I can do about it, it usually resolves itself after a couple of mintues/hours. You can try pasting it again or using the "bulk download" tab, sometimes it works.
Also, just a reminder because this is the most common issue, if you're saving the files in C drive, run the program as administrator