Android and TV Headend

Folks,

Puzzled, bought a Cyclone Subvision media centre recently, it is running Android 5.1.1 and has numerous installed apps including Kodi.

TV Headend does not appear in the Kodi repository although it is in another Android device I own running an earlier 4.4.4

Searches on the web suggest an Android problem but as mentioned I have it as a Kodi add-on on an Android 4.4.4 Netpad.

Geffers