The same problem when paying with Piastrix:
The 3D Secure authentication passes OK, and afterwards:
Warning! Error during balance refilling!
The card is not rejected or declined or not accepted. An error occurs.
I tried with different browsers, with English and Russian versions, with Mastercard and with Visa, with my own IP address and with VPN - nothing works.
A month ago, there were 4 options:
The first was taking 5%, the second - 6%, the 3rd - 7%, the fourth - 17%.
I tried 5% - error, 6% - error, 7% - success! So I did not try 17%.
But now only 5% Piastrix remains, the other options have been removed.
And this option still is not working, the same error.
Please, add back the 7% option. I don't remember now what exactly it was, I think just some additional intermediary, because it was billed also as Piastrix. But it was working fine.
As to WebMoney - I tried it and they want the scan of my passport. This is crazy. That data is private and not to be given to anyone via internet. I know that in Russia, if you send the scan of your passport, then a loan is taken in your name in some micro-credit organization. So WebMoney is not an option. WebMoney seems to be a scam.