We'd like to look into this. Could you let us know the device/browser you're using? Also, share screenshots of any error message you see. Keep us posted.
Yo @TeamYouTube how come I can’t change my cover art on my channel through the app anymore? Can you fix this?
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It just always says this and I’m usually the youtube app on my iPhone X. It used to work a while ago but doesn’t anymore.pic.twitter.com/40BCtOkIId
End of conversation
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