Terrible plugin, author stated it's free but it's not. He coded spam tab in the plugin and it pops up every several hours. Author constantly alter the pro version rules and force you to donate again by invalidate your already donated "one-time donation gets lifetime subscription" pro verison.

DON'T DONATE, don't encourage him. There are plenty of youtube download software providing much better download experience with lifetime license or yearly subscription at similar cost, but much better experience, buy those!