It's important you're able to update your credit card so you can continue enjoying the amazing benefits offered by the program. I'd be glad to give you a hand so you can get on track with the rest of your work.
To update the subscription payment info, follow the steps below:
I encourage you to check out this helpful article for more info: Update the payment method or information for your subscription.
In case you're still having issues, I recommend clearing cache and cookies on your browser. Doing this helps fix most issues the site may be having. You can do this by following the steps in this article: Clear Cache and Cookies.
Feel free to let me know how you make out in the comments below. I'll be one message away.