Meta says it is "fixing" a problem which has led to Facebook Groups being wrongly suspended - but denied there is a wider issue on its platforms.
In online forums, Group administrators say they have received automated messages stating, incorrectly, that they had violated policies so their Groups had been deleted.
Some Instagram users have complained of similar problems with their own accounts, with many blaming Meta's artificial intelligence (AI) systems.
Meta has acknowledged a "technical error" with Facebook Groups, but says it has not seen evidence of a significant increase in incorrect enforcement of its rules on its platforms more widely.
One Facebook group, where users share memes about bugs, was told it did not follow standards on "dangerous organizations or individuals," according to a post by its founder.
