I can't login to youtube when i try to upload on my iphone 4?

I need help. I have an iphone 4 and every time I press upload, it says user name and pass. I log in and it says authentication failed… I put in my youtube user name and password, and also tried my gmail… I even changed password from my computer and it still does nothing, I could never upload on my iphone.

Do you have the latest update from youtube? If so reinstall youtube as there might have been a bug in the download.

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