I can still use it for system updates, and I can still install things fine trough, discover or Pamac
but this particular installer keeps saying “No Application Data Found”
I’m running KDE.
From my experience - and that doesn’t tell a lot - these app-stores is a hit and miss.
They are usually designed for use with Debian or Ubuntu base and as such you may experience various issues.
Like it or not - in my opinion there is only one graphical - reasonable mature application for Arch based systems - and it is Pamac. The Manjaro developer behind it has matured this app quite a lot over the past years.
And the console version is a great AUR helper. Luckily the AUR version is build without snap, flatpak etc.
But - there is always a but - don’t use the GUI to run critical or large system updates - such updates is a job for pacman.
I have used discover a fair bit but I tend to use pacman or yay and also pamac too. Can’t say that I have had an issue with discover. But it’s installed so sometimes I use it.
I honestly mostly rely on Pamac myself. It’s not that I need the gnome-software store, only that, it was working, and then it suddenly wasn’t, and I couldn’t even figure out how to trouble shoot it because I couldn’t identify specifically what it was.