Although I can get the "Saved Credit Cards" box on my screen, showing my saved cards, only the "Add" button is highlighted - I'm not able to select either the "Edit" or "Remove" boxes which are greyed out. I can select/highlight any card shown in my list, but can do nothing with them! I'm wondering if the fact that I have deliberately avoided updating Firefox for weeks now has anything to do with this? When I enabled the last update (a few weeks ago) the header rows including the bookmarks row, the web page search box, and the open windows row, all came up as way too large, and I couldn't adjust them back to normal size, so I've been declining the update ever since. Would/should this affect the ability to delete my saved credit cards?