Hier die Antwort vom Support:
Hey there!
Thanks for taking the time to contact us.
In September 2019, Apple discontinued the Safari Extensions Gallery, which was required to install the 1Password 6 extension in Safari.
From now on, Safari will only support Safari App Extensions like the one included in 1Password 7. Because of this change,
you can no longer install the 1Password 6 extension in Safari.
Although your license for 1Password 6 for Mac hasn't expired (and never will), the last update to that version was in May of 2018. It's no longer being actively developed and will only receive critical security updates in the future.
To continue using Safari with 1Password for Mac, you'll need to upgrade to 1Password 7. A 1Password membership is your best option, as you'll get 1Password 7 and all future upgrades.
Try it free for 30 days.
After you sign up, you can move your existing 1Password data to your new account with just a few clicks. Learn how:
Move your existing 1Password data to a 1Password account
If you still need help, reply to this message, and one of my human friends will get back to you as soon as possible.
BitBot, and the entire 1Password team ❤️