Plex media server not starting after latest update on Synology

Unfortunately, PMS will still not run after trying multiple installations, reboots, and in different order.
I use a DS918+ and updated to the second 6.2 update without much thought. I came across this post today, tried all the things posted, and still, no luck :confused:

Do I need to downgrade the DSM version to allow the instructions here to work?