I have tried to connect my Roku app to my Roku TV a few times, and at first the app just couldn't find my TV. So I tried manually adding the TV with the IP address. Even with being on the same wifi and putting in the IP address it still wouldn't connect. I forgot about it for a while, and tried to connect again today. My TV was on and I had Hulu on in the background, the app found my tv but said it was off. I tried to connect and it said "waking tv up" and then told me it could not connect and to turn on my TV and try again. I tried 3 times, turning my TV off and on again, it wouldn't work. I tried to connect with the IP address again, and my phone had the IP address 3/4 auto populated and wanted me to finish it. However part of what was auto populated was wrong. I tried easing it and typing the correct IP address in and it again told me it could not wake up my device and I needed to turn it on. The TV was on the whole time, and I can't figure out how to connect the app to my TV.
I have a TCl Roku TV. When I tried to connect my Android Roku app to the TV it would not come up in devices page. I tried manually entering the IP address. Updating the Roku. Making sure that the network was public. Tried resetting the connection. I tried resetting the TV. And followed just about every avenue that the online troubleshooting pages could offer and still no luck. I also have a standalone Roku that I was able to get connected so I'm positive it's not an issue with the Wi-Fi or router settings. On top of this it is impossible to get someone on the phone and truly get down to the bottom of this.