Its actual a old problem still giving problems on ptr2:
If a player have both a invite and had applied for (the same) asso, he will get in trouble if he or the chair use the "wrong" invite/apply
He will get in ok, but then he will start to receive messages telling he is leaving the asso...and his invest will not count in the majorities (he will count as "without asso").
If he then leave the asso for re-enter, he has to wait 24 hours ... but when he then re-enter the problem is solved.
maybe also check what is happening when deleting the unused invite for players already a part of the asso.