In fact, we do not risk anything, because if we make a deposit, we will be able to withdraw it.
I tried to find information about deposited money as most casino will not let you withdraw your money after deposit.
In most cases it can be considered as money laundering, if you can get official answer from 8bet.io then you can try it but if you do not have official statement from them, I recommend you to not try it.
Maybe some of you know: If we make a deposit before we use the code and win, and we manage to make a x40 wagering limit, will it make a difference?
The same as my previous explanation unless you play with with your deposit first, at least wager some of your deposit before claiming the code.
In that case, I think it will be fine. In other case if you deposit then claim the code without wagering your deposit, it will be just the same as you made the deposit to meet the minimum withdraw only.