I'm not going to use it though as I'm curious only to know the reason why your wagering requirement is more than 10x bigger than others while we received the same bonus. Anyway, did you make a deposit and take their 100% bonus or you play with the $8 bonus only? It does not make sense at all if your wagering requirement is $3751 if you do not take any other bonus.
I'm also not sure what the difference, but I guess it's it is calculated from percent, not from number 320 or 3370. just look at my previous post and doel in percent, I think it is the same thing, even if the number is big than mine. So, to make sure, just try it yourself, but if you have been trying another site like 8bet.io, it's not different, it's the same requirement to withdraw, and maybe it will make you lose in the last second