If you need to change the payment/card details linked to your account, you can do so by following these steps:
Step 1: Click the Settings Icon in the bottom left of the menu bar and click on the ‘Manage Account’ tab.
Step 2: Select the ‘Update payment method‘ tab.
Step 3: Here you can update the payment method you already have linked to your account and select Save.
Please Note: There is a separate section for documents and for your subscription and this will need to be updated for each one. If you are unable to find the subscription on the main page there will be an highlighted purple option that states 'I.e. Nimbus Maps or Advanced' 
Once you have added your new details, you're all set!
If you have any issues, please don’t hesitate to contact our client support team on 0121 816 0017.