Moving this over to Forum/Site Help as it seems you're more so seeking help rather than starting a discussion =)
Are you sure you've typed in your YouTube username correctly?
It doesn't work by 'user name', it works by the actual URL.
Oh? huh, I didn't know that lol I've never messed with the YouTube link so lmao
Glad you got it sorted! Thank you Kuri and Sigyrn for helping =) I'll go ahead and lock this now~