Since last night, various sites report that there are problems with payments with Bitcoin debit cards like Bitwala, TenX, Mobi.

This morning TenX wrote that payments with the TenX card are currently not possible. They refer to discussions with their issuing bank WaveCrest, which is responsible for the European Bitcoin debit cards. In a recent announcement, Julian Hosp, CEO of TenX, stated that Visa WaveCrest has withdrawn its license to activate the cards. However, this problem should not be dramatic; Finally, TenX had been looking for a new issuing bank for some time. All in all, it looks like a problem between Visa and WaveCrest.
BitPay has written a long statement that the BitPay Card can not be used outside the United States. BitPay also attributes the problems to WaveCrest, which has been ordered by Visa to stop all Visa debit accounts.