That's definitely odd. Have you tried uninstalling and reinstalling the app? Do make sure that you're trying to sign-in using your membership account. Also, we request you to delete the screenshot from Twitter as it contains your personal information.
Appreciate your efforts trying to fix this. Please get in touch with our live support team over the phone or through chat. Here's how: https://yt.be/help/q86B . Hope this gets resolved.