Which provider is it?
Mistertango. It's a MasterCard too. It works just like Wave Crest. MasterCard is the brand, Wave Crest is the issuer. In the case of my card, MasterCard is the brand and MisterTango is an affiliate of the issuer, WireCard in the UK.
I just loaded it with coins last night and used it to pay for something at a shop this morning so it can't be MasterCard. Must be Wave Crest going through compliance issues.
Mastercards at adv still works, they wont shut down untill 27th of March. And they will be loadable untill 9th of february
Or maybe not, edit:
Transfers to Advanced Cash USD cards are temporarily unavailable. We apologize for the inconvenience.