You'll need to explain the issue more clearly and in more detail if you want assistance from the Community Forum.
What exactly are you trying to do on 48 with the card and at what exact step to you get an error?
What is the verbatim error message?
Are you trying to buy a membership plan here:
Or register your card on your account here:
Or are you trying to do something else?
If you need to contact 48 support about this then see the links in my signature below.
