Dear @YouTube @TeamYouTube @YTCreators my account got taken down and after I unlocked back I lost every single one of my thumbnails please help... #youtube #youtubethumbnail #takendown #teamyoutube
When a channel or account is terminated, you'll receive an email with more details about the reason. If you think it happened in error, you can always appeal. Also, here's more info about account terminations, including why it can happen: https://goo.gl/wi7Ubg