routers provided by your isp are more for the average internet user. setting up servers on them is wild. but the devs could have mentioned that somewhere.
But the server works fine with EVERY OTHER DEVICE I OWN, this is a specific issue with the Vidaa version of Plex. Plex for Android displays thumbnails correctly, without any advanced set-up. Plex for Web displays thumbnails correctly, Plex for iOS displays thumbnails correctly.
This is not an issue with Plex and DNS Rebind protection, this is a specific problem within Vidaa. Which is a problems because it is smart TV OS, which is the only place where I really care about getting my thumbnails to appear!
I wish I could add an exemption. My asus router allows to either enable rebind or disable.
@STDoohan - dns rebind can also be setup by your isp provider on their side and in that case there would be nothing you could do.although it is a very rare they do it.
Since DNS rebind is a problem here, does anyone want to speculate on why this is causing a problem? I mean, why is the DNS even getting involved when (in theory) my TV should be connecting to the specified IP address for my server.
Is the TV in fact NOT doing that, and is trying to lookup the server via the Plex web service?
I ask because when I put in āmanual serversā on my TV it doesnāt actually seem to make any difference at all, but I know that previously I did have to specify an IP to find my server. If the TV is doing something else to find my server, and so is rapidly switching between an external and internal request, that would explain why it gets seen as a rebind event.
@STDoohan I have had the same issue for sometime now however I have managed to find a solution hopefully will work for you.
On my Hisense VIDAA the issue was with the scanner used for the libraries. I tested this by adding and removing libraries with different scanners to verify.
I also have a generic router from ISP so hopefully this will work and the steps I took where as follows.
Plex TV
- Manual Server set IP address and port (this probably isnāt used I just had it setup from all the settings Iāve tried)
- Set both Allow Insecure Connections and Prefer Insecure Connections to Never
Plex Server
- In network tab have secure connection set as preferred.
- Modify the libraries to use Plex TV Series Scanner, Plex Series Agent and set episode ordering to The Movie Database
- Refresh all metadata
Hope this helps! Please let me know.
Might be worth testing with a new library and 1 or 2 files for speed as some initially shown up with thumbnails some shown up grey but all got populated once finished. Can also try clearing your cache through the tv settings.
Ha, you got the solution but you got there for the wrong reasons 
Having my server manually added and then also set to ānever allow insecure connectionsā got the thumbs to immediately pop up.
But previously being set to never allow insecure connections meant the TV couldnāt find my server at all. I thought that the manually added server was getting around it, but then I removed the manual IP and the thumbs remain. I also thought that changing the agent had done something but my movies folder also got its thumbs without being changed.
This was weird to me because, according to this support page https://support.plex.tv/articles/206225077-how-to-use-secure-server-connections/ the Vidaa client DOES NOT support secure connections at all.
That page does offer a workaround for secure connections not working due to DNS Rebind, which is to enable remote (ie, internet) access for the server.
I had previously tried this too! But you need to set the TV to never allow insecure connections, never prefer insecure connections AND turn on remote access on the server. At that point I was able to switch the server to require secure connections and still access it, which would always break connections before.
The thing is that having the server set as a manual server is supposed to force an insecure connection, but in this instance it is actually doing nothing at all.
I THINK that the TV is correctly operating as a local LAN device - The connection shows as āLocalā on my server dashboard, but it lists my external internet IP, so I want to confirm that the server is not streaming out to the internet and then back in. Itās actually quite hard to confirm that, since I canāt use a utility on the TV and the server just knows it is streaming not where the stream goes.
I have also set the TV and the server to be on manual, static IPs and use Googleās DNS. I have no idea if this makes a difference, but I donāt want to keep changing things that are presently working.
This is still such a mess - There is no indication at all that the remote access and secure connections are connected, and the lack of even an official FAQ page on this means that some stuff just flatly will not work.
@STDoohan at least you got your thumbnails now
