The Greet TV app From the HTC phone. topic

Hi everybody.

I wanted to open a new thread about the great TV app on the M7.
I like this app so much, it work very well with a lot of different TV's and rooms.
I want to use this app on other devices to soon I can use my tablet from Samsung with IR port build in.

I have picked the APK from my phone and installed it on my tablet and Samsung s4 mini as second test.
Both devices came up with the app, but after opening there is coming up a nasty message
That this app is not authorized on this phone, when I press back or OK the app close.

How can I make this TV app work on my other devices?
I do this because I cannot find any good remote control app for my other devices.
Can somebody help me with this? Or does anyone has a great universal remote control app what meets the quality and support for many different devices in 1 room.

Thanks for the help already.