Witcoin.space is scam
Conclusion..this apps is scam, dev just use us to watch the ads without paid us what we deserve as they have promises. We answer quiz they give small part of coin and offer us to double it by watch the ads. But when we withdraw our reward there you go, they never send our usdt. I have won the quiz with 1 bio coin as reward and the system tell me to come back tomorrow (today) to claim it but I don't see it anywhere at the apps where to claim my reward so I concluded that this apps truly scam. My cousin told me that he won the same quiz twice and yet the reward never paid to him.