After reaching out to support and working with them several times I'm still required to enter my username, master password, and password for each use of the extension.
It's faster to copy and paste from the vault than to use this addon.
Support reported that no other users are reporting this issue despite my entire org experiencing the same problem intermittently over the last several years.

Session is never getting saved. It's just not usable like this.

Просто разработчики не удосужились составить нормально описание.
Нужно использовать в связке с другим app passwork. Тогда логин будет. Но ни разу не автоматически.
Придется кликать на иконку и только потом лицезреть окошко с предложением подставить пароль, и потом еще жать кнопку войти

Logging in to the extension does not work with latest Firefox (ver 75.0a1).

It works on almost all sites, but not at all. You should add password browser from premise passwork site, like lastpass did, so it gonna be much better user experience