Hello, welcome to the website!
Thanks for contacting us about the issue. I have checked the Discord logs just now and it appears your account had joined and left our server under a minute back in June, which seems to be corresponding with your description.
However, I would like to inform you that your account is currently not present on the ban list of our Discord server, and I cannot find any former AutoMod or bot moderation log record regarding the context of your ban either.
I do not know what exactly might have caused the issue for you, but I assume the ban itself was probably not triggered directly by the server-side bots considering that the record logs do not contain any information about it.
So please try joining the server again to check if the problem persists. If your issue is not resolved yet then please let us know here again. In that case, the issue might have been caused by the other platform-side reasons.