I think the error means invalid or something could not qualified as referrals.
You should ask them on their thread and wait of their response, or just wait their team to be here to explain this matter. And if at the end you don't get the explanation, don't get their effort to solve this problem, then you may create a thread on scam accusation section.
No any errors at referrals' computers. I have affiliate accounts at several casinos and everywhere it works fine and ONLY at betcoin.ag this shit happens. And I think this shit will be at playbetr.com also because this is the same company like betcoin.ag.