As the title says, as of today (02-02-2024) suddenly the shop is not accepting any of the 3 different Visa cards i hold (and previously used for years).
The error occurs even when trying to set up a new payment method by saying:
The card you entered is not supported. Please enter another card or try another payment method. on the same card that worked previously.
visa is still supported.
when you go under your account for subscription choose credit or debit card and then it should work 
I have the same issue last 2 days and they are just sending me generic answers and steps to do, Still doesn’t work. they told me to wait 24h. if u find any solution please post it here.
I thought Blizzard stopped accepting pre-paid cards only?
visa isnt a pre-paid card but an international credit card.
when you go under your account and choosing payment option there is credit and debit card so it should be supported.
It does not work, the system is refusing both Visa and Mastercards as if they are completely invalid when attempting to set up a new payment.
To be precise, it seems the INGENICO subsystem responsible for handling the creation of new payment methods has gone haywire and no longer recognizes credit cards correctly. I have tried entering both a valid Visa and a Mastercard, same issue with both.
Same problem 
. I tried different cards (Visa and MasterCard), even the one that was already attached to my account - still this error. I wrote a request to support, let’s see what they answer (although I think they will send some kind of template answer).
Same problem. Cant pay my subscription using 2 visa cards, 1 of them i have been regularly using to pay subscription for the past year.
Having the same issue, using both Visa/MasterCard also debate and credit cards.
Country: Egypt
My visa was a debit card. I now have debit mastercard, my payment was taken as usual.
You can actually get pre paid visa cards. The OP does not say what type of Visa card they used.
Could it be the country the card is from rather than the card itself? Some countries do have sanctions against them.
I do notice the lack of Blue posts saying there is or isn’t a problem.
Edit: I had this a few days ago when buying something online, it turned out I chose MC credit card instead of MC debit card.
aahhh ok we dont have visa debit card here but we have mastercard which is normally set to debit card but a few banks have so we can apply for a credit on it but still shows as a debit card
currently my account it setup with my mastercard and the sub should be renewed on the 10th so i cant say if it get rejected yet but it didnt last month.
I tried:
None of the cards are from a sanctioned country, and I can easily pay with them anywhere.
None of them work just to buy a subscription from Blizzard 
You HAVE to choose the right card when buying something otherwise you get the invalid number thing, the first 4 to 6 digits say what card (Visa, Mastercard, etc) it is, the type of card (debit or credit, (the law views them differently, for refunds and such)) and the bank. A while ago when my bank changed from Visa to Mastercard and I chose the wrong one a few times and it got rejected.
To add: Using the same beforementioned cards to set up a subscription via Paypal works perfectly fine.
Something is wrong on Blizzard/INGENICO side when attempting a direct cc subscription setup.
I have the same Issue and i tried to put another card from another country (Qatar) and it gave me the same problem…something else i gave my card to a friend in south africa and it accepted my card there…something else 
i gave my card to a friend in UAE and it refused to enter and something to be noticed also his UAE card also refused to join (this including my and his account) xD
I’ve got the same problem - I tried to used 2 different card (mastercard from country where I’m living - Montenegro, and visa of another country. I used to use the first (visa) to by subscription and addon, but since February I cant do it Х_Х
Same problem here, the card worked fine for months and now I can’t sub anymore because its suddenly not accepted anymore.
Same problem here, just displays The card you entered is not supported. Please enter another card or try another payment method.
Having the same problem here,a master card credit card and I am getting the " `The card you entered is not supported. Please enter another card or try another payment method."
Error msg.
I have same problem with my Vise card that i used with no problems for the last 6 months ,but now it wont acept subscription…Does battle net officaly said something about this problem or solution?