Weird YouTube Glitch

[MacheTheFerret]

So lately I've been having problems with YouTube. I can neither comment on videos, nor send feedback. When I click the box that says "share your thoughts (comment)," what usually happens is that some Google webpage pops up, but then immediately gets blocked, and I can't comment. When I tried to send feedback about the issue, it asked me to sign in again, even though I was already signed in. Now, I updated my password not to long ago, and had firefox remember the new password. However, when that "sign in" pop up appeared, it seemed to have the old password in there already. When I replaced it with the new password and clicked "sign in," nothing happened. Firefox didn't even prompt me if I wanted it to remember the new password. Every time I tried the "send feedback" thing, the same stuff happened, including the old password in the password box.
Also, I managed to copy the URL of the page that pops up, but gets immediately blocked, and it lead me to a blank page.
WTF?!