It's perfectly reasonable to be concerned whether you'll have access to content you paid for or not!
You may wish to contact the developer directly about that concern. I don't think they check the comments section of itch.io very much (understandable as they have like 5/6 games). I haven't seen any official (publicly available) post from them addressing this, but many developers have made backup plans to be able to provide access to game/s for players who have previously paid or a way that everyone can access it freely. I also think it likely at this point in time (fingers crossed) that Throne of Ashes will survive the bans. Have you checked to see if you can download it again?