Watch out for this roulette. They only pay small amounts; if they ask for a cash withdrawal with a higher value they will remain outstanding forever and possibly lose the amount. I requested 0.11BTC for 5 days and did not pay me!
My login is poltergaz in SLIPGG Scam!
Did you tried their support yet? I have sent a PM regarding this and will leave a feedback on the main profile until this is resolved.