I was using an ultrawide mod when playing online and after a while I got a message about a ban. As long as I didn’t continued using it I could still play online. I think FromSoft doesn’t outright ban you unless you’re cheating, so try to play again without mods. Common bans are like at worst 2 weeks if I’m not mistaken, and small bans could also be character based. Tho I could be wrong, it’s been a while since I looked up how their ban works and I’m mostly going from memory from how DS3 was.