The changes in Plex Media Server installation processes were required due to Synology changes when moving from DSM 6 to DSM 7 and then to DSM 7.2.2.
The Plex Media Server installer has restricted privileges. As a result, manual intervention is sometimes required (such as when moving from DSM 6 to DSM 7).
Yes. The aforementioned DSM changes means earlier versions of Plex Media Server will not work on DSM 7.2.2 systems.
Did you update from DSM 6 or from an earlier release of DSM 7?
Updating from an earlier release of DSM 7 is straightforward - uninstall Plex Media Server, update to 7.2.2, install the DSM 7.2.2 version of Plex Media Server. See FAQ 34: Upgrading Plex to DSM 7.2.2+.
Moving from DSM 6 to DSM 7 is more involved. The process is covered in FAQ 27 - Migrating an existing PMS from DSM 6 to DSM 7.
The next time you run into problems with Plex, post to the forum before deleting and starting over. Updating due to DSM 7.2.2 changes does not require losing your existing configuration.
