Unfortunately this isn’t any sort of solution to OP’s problem but a +1 to it. I set up a brand new Nvidia shield pro 2019 (which I specifically bought to run PMS on it) and when trying to set the PMS up I’m getting the exact same 2 issues - “No soup for you” when accessing the IP directly and the server not appearing in https://app.plex.tv/ at all. The version of PMS running is v1.18.5.2309. I’ve tried all sorts of re-installing including a full factory reset of the device itself to no avail.
