I have been using the Vault extension in Chrome based browsers for years, yet after installing the Mozilla Extension in Firefox, it will not unlock.

Initially it did redirect me to log into my account, and then enter the master password. However, it did not unlock. Now clicking the locked extension will take me to the master password page, and sequentially to my list of passwords on the vault page. The entire time the red ! exclamation will remain on the icon.

This will loop over as many times as I have tried, and I have spent days trying to make sure nothing is blocking it. Am I missing some new permission I need to add?