When a channel or account is terminated, you'll receive an email with more details about the reason. Have you already appealed the termination? Also, here's more info about account terminations, including why it can happen: https://goo.gl/wi7Ubg
Have you tried checking spam/junk folders of your email to see if it got routed there? Also, as you've already appealed our team will review your channel and send an email confirmation as soon as they can. Appreciate your patience.