Invite link glitch for older users?

I’ve invited like 3-5 users on Gameflip, which have all signed up, puchased an item, and continue to use Gameflip to this day. However, I signed up a very long time ago (which I think is the problem causing the bug), so I’ve only recieved ONE dollar in credits on Gameflip by inviting friends. Has anyone else experienced this issue? Thanks!

That program has been stopped for a while. You must have a very old version of the app.