I have been using their wallets for a while. Initially I tried sending and withdrawing btc from cold wallet to mixin wallet, it worked relatively fast but the fee to withdraw their btc was too high. I then joined the bot, but they had a lot to offer for checking real and fake users. Regarding test questions I think it's good to verify real users but I see many people saying that they require you to deposit a deposit of 0.01btc to be able to use their free bots. A relatively large sum of money to test their application reliability for users. Not many people want to store btc or they do not have to have 0.01btc to get free 100sts daily. And their withdrawal fee is too large from 0.0003btc for 1 draw up to 0.00098btc for 1 draw. I think you should be careful about this project. It has too little information and you will probably lose all your money at any time.