You'll probably need to double check the registered card details to make sure that they are correct.
Maybe delete them and register them again.
If you don't get an error message then presumably they should work ok thereafter?
If not then you'll probably need to contact your bank and/or 48 support for more advice.
See the link in my signature below or email them at support@48months.zendesk.com
If your membership wasn't renewed via auto-renewal this time around then you'll probably have to buy membership manually for this month and then auto-renewal will kick back in next time around.
