You're attempting to add a payment method to Heroku and are encountering an issue.
Please check to see if any of the following items have been installed in your browser:
- Browser add-ons
- Browser extensions, such as an ad-blockers,
- Antivirus software
- Corporate network / VPNs
Disable these items while you update your card, as they may be interfering with the credit card form in your Heroku Dashboard.
If you still encounter an issue, please create a ticket and we'll be happy to take a closer look at your issue.