@TeamYouTube I can't sign into my YouTube Account https://www.youtube.com/channel/UCFP3_U9zZhPpPKSN7HRIWvA … Because I moved it to a Brand Account and now it says when try to sign into my Account "500 Internal Server Error"?
By chance, did you already try going through these steps to get help signing in: https://yt.be/help/nr5L ? Also, can you check if you get the same error when you log in using other devices? Let us know how it goes.