Shuffle has a deposit bonus offer for it's new users. It doesn't work automatically. You have to ask the live support agent to get the bonus after making your first deposit. The bonus comes with a 35× wagering requirement
Thank you for the detailed information, Mahdirakib
I just want to add (in case someone is not aware of this) that the wagering requirement is 35 times the deposit and bonus amount. So, if you make a $20 deposit (which is the minimum deposit amount required to be eligible for the deposit bonus), you will need to wager $1,400, or 70 times your initial deposit.