When I login to website for the first time (I am in the process of migrating my personal passwords from KeePass to 1Password), 1PX doesn't ask me if I want to add new login. I can, however, click "Save in 1Password" and it will save this login.
1Password Version: Not Provided
Extension Version: 1.6.3
OS Version: MacOS 10.12.6
Sync Type: Not Provided