The browser extension is not integrating with the desktop app using vivaldi, and manjaro with gnome.
Found the fix: (check the appendix of this page, it's at the end) https://support.1password.com/connect-1password-browser-app.
It says:
1. Quit(ctrl+Q) both vivaldi and 1password
2. sudo mkdir -p /etc/1password && touch /etc/1password/custom_allowed_browsers && sudo nano /etc/1password/custom_allowed_browsers
3. add vivaldi-bin (& optionally vivaldi-stable) and save and exit(ctrl+S, ctrl+X)
4. chown root:root /etc/1password/custom_allowed_browsers && sudo chmod 755 /etc/1password/custom_allowed_browsers
5. restart
Pinned Comments
1Password commented on 2021-07-27 21:07 (UTC) (edited on 2021-09-13 17:52 (UTC) by 1Password)
1Password for Arch Linux - Stable
The source is signed with the GPG key
3FEF9748469ADBE15DA7CA80AC2D62742012EA22
and can be seen on the install-linux guide.Getting Started
Our getting started guide can be found at https://support.1password.com/install-linux/#arch-linux
Support
Our Linux support discussion is available at https://1password.community/categories/linux
Beta Releases
Our beta releases can be found at 1password-beta. Beta releases are more likely to have regressions than our stable releases.