Go to Frigbot.com/login and log into your account
Case (1): Account Blocked
If your account is locked you will see this screen, otherwise go to Case (2)
Fill out the Credit Card details and click in pay now to pay for the pending invoice.
This will sort your outstanding invoice and will add your Credit Card to your account.
Case (2): Expiring/Expired Credit Card / Adding New Credit Card
If you received an email saying that your Credit Card is expiring/expired, or just want to add a new Credit Card, go to 'Settings'.
Click in 'Billing' and click on the green plus () to add a new Credit Card.
Fill out the form and click on the green tick to submit the new Credit Card.
Your most recent Credit Card will be used for automatic billing process, but you can remove old Credit Cards by clicking the red minus ().