Hey guys,
I thought I'll share useful info about apps that you sideload on your fire stick. Since few apps are not optimized to work with the big screen, they'll be stuck in portrait mode and you can barely see them. To fix it, please follow the below steps.
You need to install an app called "Rotate screen orientation" on your fire stick. Below is the link for it.
Rotate Screen Orientation - Android Apps on Google Play
Once the app is on fire stick, open the settings and set the device rotation to "Landscape". Once this is done, all the apps on your fire stick will always open in landscape mode.
For example, if you install Jio music on your fire stick it now opens in landscape mode instead of portrait.
Hope this helps!