For those wondering the fix is to disable Secure Connections. (I have two Ipad 2’s that showed offline all of a sudden, after that setting changed it worked perfect). The setting is on the Plex server NOT the ipad or IoS app. Took me forever to figure that out. It is under “Network” settings on the server. Hopefully that helps!
Thanks a lot, mal_fixmyac_net
I was trying a lot of things, but without results.
Now, i can connect my old iPad (All others devices works fine).
But i don’t know if my conecttion ist’s in any risk.
(Sorry for my english)
No problem! I spent hours and hours trying to figure it out, so I thought it would be helpful to post the solution!
This worked when I first was having issues but no longer works. Basically can’t use Plex on anything but a computer now.
Same issue on my older iPad. Sees server as offline, but it isn’t. Works on other devices on the same network.
I even tried adding the destination server explicitly to the iPad and allowing unauthenticated access for the iPad’s IP (from server settings). I was able to add the server but it still shows as offline.
This iPad is on iOS 9.35 with Plex 6.7.2. Despite the older versions, this worked as recently as a month ago. I believe something must have changed on the server side since this iPad doesn’t get updates.
Why hasn’t Plex Support replied to this thread yet?
Dear all,
I did experience the same behavior on my iPhone those past days. I’m running Plex on TrueNAS 12 U5 and yesterday I updated Plex plugin to version 1.24.4.5081. Since then it works again.
However, not sure this is linked to the upgrade because I first suspected the Let’s encrypt expired certificate story and I removed the bad certificate (procedure is described here on a TrueNAS jail : SSL certificate problem: certificate has expired -- the OpenSSL 1.0.2 vs LetsEncrypt issue | TrueNAS Community
It did not work immediately after the removal but once upgrade, everything went good. I don’t know whether the upgrade alone or the combination of both did solve the issue.
Anyway, this is my approach based on TrueNAS, I don’t know others.
I’ve also checked my AppleTV and my (very) old iPad 2. Both are ok.
I had this same problem on my iPhone. It was a bit misleading to see the offline status as I know the server was online since I could access it from other devices. The fix was simple although took me a bit of experimentation to figure it out. The Plex app on my phone was not logged into the Plex server. After I logged in the offline status disappeared and I was able to view\play content.
hey guys,
until about a week ago, it was woking again, but now i have the same issue again.
My iPhone on Wifi is connecting to my PMS over Nginx Proxy Manager just fine, but not any more over Cellular. My PMS is on LAN but in another VLAN.
I also tested Plex for Windows an PMP on Windows 10. Non is connecting when on Cellular.
On WIFI the same Windows 10 is connecting just fine.
Software Versions:
Server: 1.25.4.5468
PMP: 2.58.0.1076-38e019da
Plex for Win: 1.40.1.2823-6f60f3a7-x86_64
iOS-App: 7.27
hello,
i think the Problem is, that the plex-app is connectin via IP-address and not via hostname. So it is understandable that it is working via a webbrowser.
But why was it working until about a week ago?
I didn’t change the Reverse Proxy, i only added ipv6 capability for npm.
regards
hello again,
i found a solution.
When you are Remote and IP-Connection is not possible, for example you use a reverse proxy, then you should use a custom URL for your plex-server.
I configured the custom URL in the network settings of my plex-server an voilà it was working again.
hop this will help somebody… 
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