Thanks for reaching out. Do you see an error message while trying to appeal? Additionally, have you taken a look at our help center article which has step by step procedure on how to appeal? Keep us posted.
Appreciate the details. Could you share your ID based channel URL from the email that you should've received with the reason for your channel's termination? Also, you can try appealing the suspension using this form here: http://yt.be/help/7epT . Keep us posted.