We currently DO NOT support casting via Fire TV / Firestick / Firecube from our mobile apps to a tv therefore if you are accessing our service in this way, as it's unsupported, it may work sometimes but we cannot guarantee it will work every time.
However
If you have a Firestick/cube connected to your tv, you should be able to download the GAAGO Fire TV app onto it. Similarly, if you have a Fire TV, you should be able to download the GAAGO Fire TV app directly on your tv from the Fire TV app store.