Plex media server is not connecting to my nvidia shield

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The same here. I wrote to plex support these:

Hi, i’ve recently purchased nvidia shield tv pro 2019. I got the device this friday and set up plex. Until today, everything was working flawlessly, but today pms doesn’t start. Neither the plex app on the shield, nor through network. The last thing i was doing is uploading my ios photos through ipad plex app. My configuration for the shield is; i’ve attached a 2tb external hdd to replace internal storage (all data completely moved to the new storage and did it first after i purchased the device). Attached two 8tb hdds for content. I run the latest android tv firmware and plex app is also up to date. For diagnosis i’ve uninstalled the pms and reinstalled it with no luck. Yes, i’ve restarted the shield several times also…