I installed the Xfinity Stream Beta app on my LG TV model 50UN7300PUF. App starts OK, but when I hit 'get started' it doesn't do anything. Have tried reinstall, power down/up etc. As far as I can figure it should work on that model. If it matters I am on an Orbi wireless network, not direct to the rented Xfinity cable modem.
Figured it out and it's a stupid usability thing I wasn't aware of. I was clicking on the "Get Started" and it wasn't going anywhere but if I used the arrows on the remote control it did. Makes no sense but there we go. All working perfectly now.