Uninstall instructions - Remote access works for several minutes then goes offline and Plex Server crashes - #56 by nibbles
Until the fix is posted for regular users, only Plex Pass users can access the beta PMS with the install patches you probably need to run the latest version.
You can run 1.28.2.6151 just fine until then. Usually a new stable is released each month. It depends on how stable it is 
A couple of links and a version matrix are here Duplicate servers & can’t use any of them - #9 by nibbles
Not my best reply but at least you have something to chew on.
