Hey Hey
Though the referral system isn't completely broken and the devs are working on it, some work, some don't, but it's important to note that it has to be a completely new device and account. feel free to pm me your UM0000 number and one of your friends and I can find out what happened or at least highlight it to support for you.
My frine Um is 13536377 / 13347445
Go read the thread in the bug report forum.
This issue has been going on for over a year.
There is no fix in sight.
It's a super sketch business practice.
"Hey get your friends to play so we earn more money and we'll give you some bonus stuff"
"Oh wait, you actually wanted that bonus stuff? Sorry!"
"Thanks for the increased player engagement metrics which help us earn even more money!!!"
Straight up scumbag move on Plariums part.
My wife signed up on her own original account and different device.
Another friend signed up on his own original account and different device.
None of us got anything.