I installed Amazon Video with #SIDELOADTAG and in general it is working fine, but is it possible that there is no way to change the audio language? If I press the middle button, I cannot select the audio settings because pressing the middle button just keeps pausing/playing the video. With the menu button from my Logitech Harmony, I can open the settings, but cannot navigate, it's stuck on the slider for turning subtitles on or off.

There is an option in the general settings of the apps where I could choose between German and English audio (my account is German so German is the default) but this setting won't get saved and reverts to German.