[MASTER] Issues with Friend Invites: Did links work properly? How can I tell if an invitation was processed correctly? Why didn't I get any gift for my account after inviting friends? (NOTE: Friends must get to Level 10 before gifts are given)

Bugs & Issues
54

My guess then is they either had tried and quit the game at some point, or the link didn’t work originally for some reason.

I’m not sure if there’s any solution to that, but you could try contacting Support to ask.