Credit card info not accepted

I was trying to subscribe to the paid version of an app when I got the message that I couldn’t, since there was a problem with the credit card connected to the account. I tried deleting and re adding the card information, but I got the message that it was not accepted. I’ve previously used the same card to successfully get memberships and I didn’t change anything, what could be the problem? Also this has been happening for a while with different apps.