I just noticed that my auto votes weren't going out, so I went to check the @steemdunk Discord and its disappeared from view. Looks like I missed the announcement 10 days ago that they will be shutting down on January 15. I liked this service—it was simple and reliable. In any case, I suggest you revoke the posting authority granted to @steemdunk for security purposes.
You can do this here: https://keychain.steem.design