Re: 🎲🎲Robodice.io - Live streamed Social Dice Game! [Investments, Affiliates]🎲🎲
Also got this error last night, I used chrome browser on Desktop, bet amount 10 satoshi both with eth. when you read post above, you will see same problem with phone, look like your server problem.
Below post by OP is the reason for the problem you got:
The reason you cannot place bets with ETH, is beacuse the bankroll is too low. 
Similar post was made earlier when OP answered my question about ETH bankroll which is only 0.00000001ETH
If the problem occurs when you bet with btc then it is a different problem that needs to be fixed.
But if the problem occurs with ETH bet only then it is simply because the site has no ETH bankroll to pay ETH bets.