I didn't get an answer to the question so I'll repeat it. In other words, if I want to top up an existing card, can I do it through Stealths, or is that option only through using the official website and selecting one of the top up options?
As far as I can see, the balance on the card can be max $500, and regarding the top up and voucher code,
does this mean that we can buy additional codes through you or we can choose one of the options offered on the
card issuer's page?
~snip~
eXch is blocked by most payment processors, including Cryptomus.
This is a big drawback, because I looked at the current processor and it's really strange that it doesn't accept BTC, and at the same time it accepts BCH
Besides, not accepting coins with eXch is another nonsense - I think you should (if you haven't already) put a warning on your site that the current payment processor you use does not accept BTC and that the coins being sent to payment processor obviously go through a strict AML verification process.