Sometime ago I had invited 3 friends to play Raid and everything worked out fine. A couple weeks later, two of these friends dropped the game so I went in the referral section and excluded them from my list, thus leaving only one referral link working. A couple of weeks go by and another friend wanted to play, so I coppied my referral link and send to him, but it never showed up on my account. And this guy is still playing (over level 50 now). I though it was something he did, so didn't mind it too much. But today I invited another friend and same thing happened: he created his account, started playing but never showed up in my referral section.

Any help?