Hi. I just upgraded from 1Password 4 to 7 but purchased a standalone licence. I typicaly use Firefox as my browser but when I've installed the extension, it doesn't link with my existing installation, it asks me to sign in to my 1password account/subscription -- which I don't have. Is my standalone licence not compatible with Firefox?
You have to use the classic extension: https://support.1password.com/cs/1password-classic-extension/
The current 1Password browser extension (formerly named 1Password X) directly connects to the 1Password servers, which you can’t use without a 1Password account.
Classic extension is being deprecated due to Manifest V2 being dropped in Chrome, if you want to grab the extension you need to go to https://app-updates.agilebits.com/product_history/OPX4 to get the download directly.