you can Remove your credit card and Logout and
close all Browser and do clear cache and cookies for any Browser,
how to clear cache and cookies in microsoft edge browser visit Here link
or you can try it for a different Browser
and use a Browser from your computer, is better
use Browser microsoft edge or chrome latest version
and just make sure your Browser is up to date update
sometime is the Browser is not update is give a issue.
for microsoft edge how to update your browser visit Here link
and do Restart your computer, is will help a lot,
and if you use a home internet please do one thing take your power internet off for about
a 1 minute and put it back on,to refreshing your network,
and log in and re entered your credit details,
just make sure your credit card number and your address match the same,
sometime your typing but is a one word or letter or number is a wrong or is missing just make sure for it.
How To Update or Remove Your Payment Card
To update or remove your credit or Visa debit card details,
1. sign in to Self-Serve. Once signed in,
2. click on the ‘Payment’ tab,
then scroll to the bottom of the page and select ‘Manage my card’.
you will have the option to either select ‘Replace this card’, or ‘Remove this card’.
You will need to review and confirm this change to your account,
and if still not fix it please you Have To Submit a Ticket To Customer Support Agent by CS_Agent,
Explain your issue to Contact Customer Support Agent by CS_Agent ,
they can solve your issue, they are nice service Team the will help you 100%.
Here’s how to contact Customer Support Agent by CS_Agent,