I've tried many things, signing in and out, trying to use a manual IP address and port, and everything here: https://support.plex.tv/hc/en-us/articles/204604227
But no luck. My PS4 just says:
"We couldn't reach a media server
We haven't found any servers to connect to. Please make sure you've installed Plex Media Server and you're signed in on your server using the same account(Jake Gotham). You can also open Settings/Manual Servers and manually configure your server's IP address.
Remember, servers signed in with a Plex account have additional security and don't allow connections from devices that are not signed in.
Suppor for your Cloud Sync and mobile Plex Media Servers is coming soon.
[Retry] [Go Home]"
I've tried for a few evenings to figure it out, but nothing has worked. It's so strange because it worked before... I even got a PS4 Pro recently, and the same issue persists.