Is this the correct link?
https://betroar.io/under-maintenanceThe Brawlers are Taking a Break
We're currently performing maintenance. Bit Brawles Will be Back Soon
Maybe that's the reason why they haven't paid you because they are under maintenance. Not sure though when this maintenance started.
Follow the thread here:
Betroar.io Try Bit Brawlers! 💰 UPDATE 11/26: .001 BTC Airdrops Extended! 💰 .
Hey everyone, just a heads up, we have pulled the game offline to fix some errors with the timing of Bit Brawlers matches, will let you know as soon as we have an update!
As said the website is under maintenance, this means it'll take little more time for the errors to be rectified. Once errors were fixed these issues won't happen with the claiming of bonus. I believe there is no limitations in referrals, because beyond certain limit the users won't take effort to spread about the casinos.