The temporary solution is as follows:
Just add the following rule to the hosts of the server device
If it doesn’t work, reboot the device and try again, or find an IP address that you can access locally from one of the following domains and add it to the hosts.
172.64.163.98 metadata.provider.plex.tv
172.64.163.98 metadata-static.plex.tv
172.64.163.98 assets.plex.tv
172.64.163.98 scrobbles.plex.tv
172.64.163.98 analytics.plex.tv
172.64.163.98 clients.plex.tv
172.64.163.98 images.plex.tv
172.64.163.98 app.plex.tv
172.64.163.98 discover.provider.plex.tv
172.64.163.98 mp.plex.tv
172.64.163.98 ump.plex.tv
172.64.163.98 mpm.plex.tv
172.64.163.98 meta.plex.tv
The solution is from this thread in the forum: