Auto fill credit card number not working

When I encounter a web page that requires credit card information, I open my Firefox extension and click on the credit card I want to use to complete the transaction. This has always worked well for me, although occasionally it would fill the incorrect expiration date or security code. All of a sudden, it fails to fill the credit card number. I find I have to copy the card number and paste it into the web page.

I’ve tried the “new” cntl-shift-l" approach but that doesn’t work either.

Any help with this would be appreciated. It was really handy when it was working.

Thanks.