There are reports of spam coming from specific users on lemmy.blahaj.zone. I stumbled across some very unpleasant NSFL content on an unrelated post. I wouldn’t reccomend it, but you could check [email protected]’s profile for an example if it hasn’t been taken down yet.
It may be worth temporarily blocking that instance until they get a handle on the situation.
They need to deal with the methods these accounts use, not just individual accounts.