Witnesses have no control over this.

Unlike Steem, we aren't censoring anything - there are no real "blacklists" or "whitelists" at the voting level.

There are no rules, for or against bid bots - it's simply one person @ctime choosing to downvote posts that have upvotes from bid bots, as they think that bid bots are wrong.

We have no way of blacklisting or banning @ctime (and to even be able to do so would be enforcing censorship - we're supposed to be neutral).

There's a few ways you can deal with this:

1. Don't use bid bots and @ctime will stop flagging you

1.1. Promote your posts in a more natural way, e.g. via the @minnowsupport community

1. Use more powerful bid bots so that @ctime's downvote is weaker than the upvotes

2. Power up a lot of HIVE so your vote is more powerful than @ctime's downvote

3. Or just go on a flagging war and flag all of @ctime's posts

It's your choice - this platform is all about freedom to use your stake as you like. Some have chosen to use their stake to flag things they disagree with, and there's nothing any of the witnesses can really do about it.