Dashlane extension repeatedly malfunctioning

I have been using Firefox for years, happily. Lately, however, I seem unable to get the Dashlane extension to work for more than a few days before it grays out and will not function. I use Dashlane for everything, so I cannot continue to use a browser that forces me to uninstall and reinstall the extension all the time. I have reported this issue more than once. The extension works fine on Chrome. I don't want to switch to Chrome full-time, but if I can't get this figured out, I'll have to.