Discover does not find some apps

[localhorst]

Hello, I have Arch Linux with Plasma Mobile installed on my Pinephone. Now when I open Discover and search for PureMaps, Kaidan or KTrip for example, Discover finds nothing. But on the Plasma Mobile website these apps are listed. When I try to install these apps from the website, Discover opens and shows me this output: "appstream://org.kde.trip" cannot be opened.

Is it possible to install these apps?

Many thanks to all!

[acrux]

I guess Arch Linux PinePhone software team should package these apps and put in corresponding repositories for Discover to find them.
My experience shows that Discover is currently quite far from being a ready software manager. I'd recommend to use commandline program pacman instead

[localhorst]

Thanks for the answer. When I try to install with pacman, it does not find the package. Is there an extra repo I need to include to be able to install the apps from plasma?