Certainly, it's a banking problem. My problem was not to list pending transactions, though, it was not knowing how much I could use at any given moment with my

Certainly, it's a banking problem. My problem was not to list pending transactions, though, it was not knowing how much I could use at any given moment with my card (because it's unrelated to my balance). The cryptocurrency part was to allow for fast reload (due to fast transfers), but anything that allows this (without hitting an other card rate limit, obviously) would do.