Plex Media Server not working on my Qnap NAS

Hi,

I have a problem where the Plex Media Server does not work after the upgrade. I have tried the 1.1.4 in the app centre and downloaded 1.2.2 from the Plex site but both does not work. I also notice that the server tab in settings is not visible as well and all my devices are not able to locate the Media server now. Does anyone have the same problem and any idea how i can get this working again?

Thanks
Jeff

Which QNAP NAS and QTS version are you using?
Is the Webinterface (Web Player) reachable ?