My 5K+ does not work with Pimax XR Software but does the 5K super work with Pimax XR and Open XR etc. so I don’t have to use SteamVR?
It depends on the games you play. If the games support OpenXR, they can be launched through PimaxXR. However, most games are based on OpenVR.
Have you tried reinstalling the PimaxXR application?
I tried it with 5Kplus MSFS 2020