Keeper password manager stopped working on Firefox about a month ago. It is the Keeper auto fill that is not working. I have exhausted support from Keeper. They cannot explain it. I have removed and downloaded Keeper and Keeper auto fill about 10 times to no avail. It works on Chrome and Safari, but not on Firefox. All devices and accounts are up to date with the latest versions. I am having to stop using Firefox for now because it is such a hassle to fill in all my passwords. If I can't solve it, I'll have to try a different password manager, or stop using Firefox.