I really have no idea why I was banned from those two communities specifically. I don’t think I’ve interacted with any of them (apart from reading/voting) for weeks. It’s not an instance ban.
If there is a better place to post this, please tell me.
EDIT:
I posted a link that was falsely flagged as malicious, have been unbanned! See comments for more details!
I’ve been banned from a handful of subs that I never went on or interacted with in any way.
Somehow the Lemmy mod abuse is actually just as bad as reddit. Only slightly better because at least I can see what communities I’m banned from relatively easily.
It does say “automod” so I think it might just be a mistake. But I contacted a couple of mods, maybe somebody can fix it (or explain it). I’ll update the post if that happens.