Yeah, I've had this happen a few times. It's definitely different from a normal mod removal. When Reddit removes it, even the mods usually can't bring it back, and if it keeps happening there's a chance the account gets shadowbanned.
I work on content for a website called Spinning Grillers, so I post restaurant and kitchen-related stuff from time to time. At one point almost everything with my website started getting removed, even posts that weren't trying to sell anything. What fixed it for me was slowing down on links, changing the wording of every post instead of reusing the same text, and spending more time commenting than posting. I also stopped making the website the main focus and just joined the conversation naturally. If it made sense, I'd mention Spinning Grillers later instead of right away.
Nobody outside Reddit really knows exactly what triggers it, but it seems like their spam filters have become much stricter lately. If it's happening on multiple accounts, I'd avoid posting the same content everywhere and give the accounts some normal activity before posting again. That worked a lot better for me.
