I would recommend try going to here first:
and make sure you are up to date with the latest public plex server release, to see if that fixes any issues you may be having.
The version I have is for beta testing the next release. You can not run production and beta you have to choose one or the other. Instructions are at the bottom of this page if you want to be a beta tester of the next release(s).
https://support.plex.tv/articles/201844613-early-access-beta-releases/
