I use Plex on Synology and don’t have any issue with the package stopping so it’s not something impacting everyone … I don’t see much in either this or the other thread providing technical info … lots of insults though… not very conducive to incentivize people to help you.
I am interested in seeing how this issue you are experiencing gets resolved - I learn from it myself - but it won’t get resolved without more technical details and less venting of your frustrations. Just take a breather… it’s just media software being stupid, not addressing clean drinking water. 
Even if you don’t personally think it’s relevant to provide more information or answer questions, the fact is you haven’t been able to solve this yourself - despite being
So it will be to your advantage to answer questions or provide data you don’t think is relevant in order to help others with different perspectives and approaches try to help you get to a solution your own routes haven’t reached.
Have you tried the recent version update? 1.22.2.4282 was released to public - lots of changes\updates from 1.22.1.
Have you tried a clean re-install of the package - completely remove it and re-add it? Synology is pretty safe with re-install of the Plex package.
Maybe some recent logs? Both from Plex and Synology?
What else do you have running on the Synology - not everything but maybe any other non-standard packages?
