flatpakcommand at the end of this step.
In order to install Primephonic with GNOME Software, launch GNOME Software, which is called just Software, search for Primephonic and finally click the Install button.
Alternatively, launch a Linux terminal emulator and type the command below and press the Enter key to install the package.
flatpak install nuvola eu.tiliado.NuvolaAppPrimephonic
Alternatively, you can launch Primephonic from a terminal:
flatpak run eu.tiliado.NuvolaAppPrimephonic