I'm not sure if the Magenta app is available directly on your Panasonic TV. Panasonic TVs usually provide access to apps via platforms such as Viera Connect or Fire TV OS, but the availability of specific apps may vary. It would be helpful to check the available apps in the Viera Connect Market or the Fire TV app store if your TV uses this platform. Alternatively, you could use the Magenta app via screen mirroring from a device such as a smartphone or tablet if your TV supports this function.