I use 1Password in Firefox all day long.
For some reason, this evening, 66.0.3 64-bit stopped working with 1Password plugin for me.
I tried to install the plugin, it says the download is corrupt.
I saw 1Password X, but I don't know if that's Windows or Mac. (I'm on Windows 10, latest.)
Anyway...hopefully we can figure this out. I miss filling credentials in Firefox!
I have an annual Families membership.