Temu Free Gifts Invitations Not Accepted and Progress Blocked

I have been trying to complete Temu’s Hattrick / Free Gifts style event over the past 4 days and after working very hard to invite people, the system suddenly started saying that my invitations are valid but that people can no longer accept my link. Because of this, I cannot reach the required number to receive my free gifts, even though I have already done what the event asks. I keep sending my link to different people and they tell me they cannot accept it, which is frustrating for them and for me. I feel like my effort is being wasted and it feels like a scam when the app blocks my progress right when I get close to the target. I request that Temu unlock my progress in this event, accept all of my valid invitations, and allow me to receive the free gifts I have earned according to the rules. I also ask for a clear explanation of why my link stopped working and for this issue to be fixed so it does not happen again.