I run Ubuntu 18.04 with Gnome 3.28. The official ubuntu repositories have nitrokey-app version 1.2.1-1 which is unusable in Gnome>3.26 since it does not support the tray. So basically, the app in the official ppa is broken (why do they include it in the first place?).
The download page suggests using the nitrokey-team ppa to get the newest version of the app. However, this ppa does not have a release file for bionic. So it can’t be used. This is what you get, even when using apt update --allow-unauthenticated --allow-insecure-repositories:
W: The repository 'http://ppa.launchpad.net/nitrokey-team/ppa/ubuntu bionic Release' does not have a Release file. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. E: Failed to fetch http://ppa.launchpad.net/nitrokey-team/ppa/ubuntu/dists/bionic/main/binary-amd64/Packages 404 Not Found [IP: 184.108.40.206 80]
So it seems the nitrokey-team ppa is also broken.
Diggin’ through the forums and the readme on the Github page, I found that there also is an AppImage release, which should be used. The AppImage itself runs fine, just remember to run
chmod +x and to execute the file directly.
Still it would be nice to have this information on the Download page, or even offer the AppImage directly on the download page. It did take me some time getting this to run.
Are there any plans to fix the nitrokey-team ppa, so that the app can be installed with apt?