Base on my understanding of what auto ban mean, if you once created an account in the past and was banned and you use thesame information that links your identity to that old account banned, your new account will also be banned automatically is is what was referred to as ban evasion or auto ban.


This depends on weather you set a notification bot for that thread or not, it could also be that you select the notify me botton from the topic thread, you can disable those functions if applied to your case or rather delete your post made after 24hrs to avoid someone tagging you on that same thread.