When I try to download the extension from your website, firefox first blocks the download and asks for confirmation. After I click allow the download starts a new message comes up stating that the download could not be completed because the connection was lost.
I have tried disabling all other extensions and security/privacy settings, restarted, etc. with the same result.
I'm running Firefox 56.0 (64 bit).
1Password Version: 6.8.3
Extension Version: Not Provided
OS Version: OS X 10.10.5
Sync Type: Not Provided