interesting, were you banned within the last month? they went hard in januarary and last week too, not only you but other people were banned. 2 of acc were banned for similar reason that were 5+years old. simply if they detected you commented in a post (with an old account that you deleted and was previously banned) some or all new ones will get the same ban.
currently 1 of my accs that had the pera ban inbox message isnt really banned? i checked the repeal page and it wont let me repeal because it dint detect a ban in place, which makes me think they actually were banning indiscriminately with an AI, and ive heard people were banned in error too. from what ive heard from a different forum, they were banning in waves since November. also the ban was done by an AI.
try appealing your original account that got banned, and try once a week even if they reject the first time.