Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
There are five different Roku players that used the number 2 in its name, and I believe only one of them supports YTTV. What model number do you have? The fact that it isn't appearing in the Channel store is a likely indicator you don't have a supported model.
Dan Roku Stick (3600), 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.
Supported Roku devices include: all Roku TVs, Roku Ultra, Roku Streaming Stick+, Roku Streaming Stick (3800x, 3600x), Roku Express/Express+ (3910x, 3900x, 3710x, 3700x), Roku Premiere+, Roku Premiere, Roku 4, Roku 3 (4200x, 4230x), Roku 2 (4210x)
You can find your model number via Settings > System > About
Roku Streaming Stick +, 3810X, Ser YH0059427035, wifi - Samsung UN55ES6100
Roku Streaming Stick, 3600X, Ser 5S56D8240827, wifi - JVC EM37T