Just to be clear, you installed script.plexmod.zip from this post and it will not start, on a Raspberry Pi 5? Running one of the supported versions of Kodi?
I’ve got nothing against Plex HTPC, and in fact I use it myself, but you specifically mentioned wanting to run it on a Raspberry Pi 5. You’re not going to be able to do that with any official Plex client (right now) so Kodi + PM4K is the closest you’re going to get for now.
Given that you’re having issues, you may want to post in the thread I linked to give the dev a heads-up on the GitHub issue you created.
