Plex server issue AGAIN not working

Here we go again. Plex suddenly stopped working with MCH again.
No device such as TV, wifi-radio etc is able to see plex to stream audio and video content from MCH.
When I went online to see what plex is (not) doing I found all folders in plex to be empty while the folders on MCH were still there unchanged. I gave up on trying to understand what plex is supposed to be other than unreliable and instable long time ago. I am not useing the plex app on my phone since it is accessing my homenetwork only once or twice a year for unknown reasons.

Today I deactived an reactived plex several times but it is still not seen on my devices at home.
Is it something we just need to sit out for the time beeing?