I just purchased a Hisense Roku TV. How do I get it to appear under "devices" on the Roku App, so that I can use my phone instead of the remote? My Roku sticks appear on the Roku app but not the TV. I have uninstalled the app and reinstalled it and that did not work. The TV is connected to my wifi and is listed under my "linked devices" on my roku.com account.
For the app to work, you need to ensure there's no security setting enabled on your router that blocks wireless devices from seeing each other or other devices on your network.
Your home network also must be using what are designated as private IP addresses, but that shouldn't be an issue unless you've modified the settings yourself, or perhaps your ISP is controlling your internal network to use a different IP address range. As long as your IP address uses 192.168.x.x (as almost all consumer routers do) you should be fine.
But if you're using a wireless connection that is labeled as "guest", then the security setting I mentioned is most assuredly turned on.
Dan Ultra (4640), Ultra (4670), Ultra (4800), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.
We got ours to work finally! We tried all of the suggestions but none worked.I reset the router itself by unplugging it for 10-12 seconds and plugging it back in. And then BOOM, the devices showed up once my router finished powering on! The IP addresses of all our TVs reset as well.
Sidenote: We can all use our own mobile devices to access the roku app for our own tv even though it's on one acct.