Hi, which product or services does this relate to? For example, is this related to a Mozilla VPN subscription?

Please be cautious in providing anyone with personal details including payment account information without having a really clear understanding of what the information would be used for and being sure it will be handled in a trustworthy manner.

If this problem is with the credit card autofill feature in Firefox, check the Settings page here:

• Windows: "3-bar" menu button (or Tools menu) > Settings (previously "Options")
• Mac: "3-bar" menu button (or Firefox menu) > Preferences
• Linux: "3-bar" menu button (or Edit menu) > Preferences
• Any system: type or paste about:preferences into the address bar and press Enter/Return to load it

In the search box at the top of the page, type credit and Firefox should filter to the "Saved Credit Cards" button, which you can click to manage your data.

Was that the right list?

More information on this feature: Automatically fill in credit card and payment method data on Web forms