The icon for your add-on (“push to kindle”) does not appear in the toolbar. I’ve tried everything to find it. Impossible.
Thank you for trying to fix it.

Hi Tavi,

Sorry about the issue. We’re getting a lot of reports of this. The solution at the moment is to customise the toolbar and drag our icon onto the toolbar. It should then stay there. If you’re not sure how to do this on Firefox, have a look here:

Let us know if you still have trouble.