Seriously???????

I am upset. I have to download an older version since my phone cant update, which is fine, but the app WILL NOT LET ME LOG INTO YOUTUBE so I cant upload my movies onto youtube. It keeps popping up, asking me to log in, but when I type in the CORRECT PASSCODE AND USER, it keeps asking me to sign in. I know my account exsists, for I was using the account just seconds earlier. Over all, I am VERY UPSET.

*later*
I deleted it and waited an hour for it to redone load and it did the SAME EACT THING! I even tried signing in with a different account and it did the same thing. I HATE THIS APP

Im a girl jedi about iMovie, v2.2.3