As this may help the community, I found the issue and in my case (probably for some other people too) was that I migrated my old Samsung with their Transfer App that mirrors many of the stuff from the previous phone to the new one.
I suppose the playstore (due to configuration files) thinks that it is still running on and old phone and not on the new one. When looking for the SunriseTV app this will not be shown because it is not anymore compatible with that old phone. To not extend myself longer, I did this:
Phone>SystemSettings>Applications> search for “playstore” and in the storage section clear all data and cache from it.
I ran again the playstore and voila!! there was the Sunrise TV app available for installation and not showing anymore that it’s not compatible with my device.
Hope this helps other.