Are these from Wirecard? Could you give some more information about your relation to the card issuer? Is it a partnership directly with mastercard, or with another third party that can cut you off at any time?
https://www.wirecard-cardsolutions.co.uk/products/prepaid-services/Anything that have to do with fiats especially debit/credit cards are always very strict with financial regulatory body constantly monitoring the transactions.
I think you will need an established website to pull some interested people to your service whereby you will tell us how safe and legitimate your business is. This goes beyond telegram chatting.
No paper work is a welcoming idea.
This. It sounds too good to be true, just like
https://bitcointalk.org/index.php?topic=5154256.msg51562610#msg51562610 does...
Idk.. What assurances does anyone get from you that you don't run off with their customers funds in the first place?