Tor cannot be banned. All the users of Tor counts as one (this is why they don't get IDs either). You can turn off Tor posting in board settings if it's much of a bother.
I dunno why you get captcha error. If I try banning a torpost, it says ban applied, but then it just doesn't.
>>/12064/
We recommend using the endchan.gg domain for moderating because it isn't behind CloudFlare for sure. CF caches the content, and it happened (on .net domain) that they served someone else's cached account page. This cannot be used to "hack" anything because no actual authentication happened, no session started, but if someone gave an email that could be exposed.
These days we keep .gg and .net off from CF, while .org behind CF. Usually, this changes depending.