Hmm, that's odd – have you recently hid your channel? If you did and it was by mistake, you can re-enable your channel by following these steps here: https://yt.be/help/icMX If that's not the case, give us more details on how we can assist!
Got it, thanks for the update. Share more details in a feedback report using these steps: https://yt.be/help/feedback . That helps us identify and fix widespread issues. Make sure you're logged into the account experiencing the issue when you send it in!