Why are my posts getting removed now?

I’m really confused and hoping someone can explain. Whenever I try to post here, it keeps getting removed even though I’m following the rules. The strange part is I literally used to post the same thing before and it didn’t get removed back then. I’m not trying to spam or break rules, so I don’t understand what changed. Did the rules update, is it automod, or something else? Has this happened to anyone else or does anyone know what might be causing it?