Starting today I can no longer cast using the Sunrise UPC TV app on my iPhone.
The “Watch on TV” is shown and I can select the Android device however when I choose this, the TV flickers and then returns to the main menu.
I’ve tried several iOS devices and Android devices, but the problem exists on all.
Version of app is 4.40.4306
iOS version is 15.4.1
In addition I’ve reset my router, just in case this was the problem.
I am able to cast using other apps, e.g. Zatto.