Server Version#:1.40.0.7775.7000
Player Version#:na
<If providing server logs please do NOT turn on verbose logging, only debug logging should be enabled>
Not sure how to diagnose this but every time I try and use Plex of recent, the server has stopped on my synology. I start it and it works for a while
I would start with your server logs to see what it was doing when it stopped.
