Settling for reputable casinos will save you a whole lot of stress like this one because, if it stakes truly their KYC verifications procedures won't get to this level, and asking for such documents can be seen as a way of frustrating the gambler leaving his remaining balance because maybe he will not be able to meet up with such receipts demanded,
I second to this, while it's okay to try other new casinos, it's better to double check their kind of ToS, reviews such like this internet how possibly shitty this casinos are. As for all the comment this is by far the first time i saw asking store receipt for kyc verification, maybe due to the possible location issue since receipt always had a date and address of the store on it. But just like any other docs aside from IDs, it can be faked so easily.