why is αυτά in correct? If i want to refer to a group with unknown gender, should I still use αυτοί;
Yes, or when referring to a group of mixed gender.
could you report or add αυτά as an alternate then, please? thanks!!
Sorry, maybe i was not clear. You must use αυτοί for groups of unknown or mixed gender. "They" may refer to animals though, so "αυτά" should be added.
"αυτά" has been added as an alternative.