So a temporary workaround until this is resolved is to adjust the display settings via the Fire TV settings(Settings – Display & Sounds – Display – Resolution – 1080p 50Hz). This issue also occurs with a real hardware mouse. The Fire TV 3 and Fire TV Cube have a bug that affects the mouse position unless the display settings are set to 1080p 50Hz. I have a Fire TV 3, or a Fire TV Cube and the mouse coordinates are off. The troubleshoot section in the phone app will also find and resolve common issues. Also verify the status in the lower left corner says started. Please verify that you are pressing the ‘play / pause’ button 2 times quickly(300ms). Please toggle the ‘ADB Debugging’ setting(Settings – Device – Developer options) on the Fire TV off and then on again. The app states the network connection has timed out. Where can I find the IP Address of my Fire TV? Up, Down, Left, and Right: moves the mouse pointer What does each key do when in mouse mode? Press the ‘play / pause’ button 2 times quickly on the remote to toggle between the normal remote and mouse functions. How do I switch between the regular remote and mouse modes? How do I enable adb debugging on the Fire TV? Please refer to the FAQ below for details. The Fire TV Edition models must have the mouse service started from the phone client app. The Fire TV Cube has a mouse related bug. The Fire TV Stick 4K model must have the mouse service started from the phone client app. The mouse service must also be started from the phone client app. The Fire TV 3rd Generation model has a mouse related bug. Nothing special is required for this model.
Remote: The stock hardware Fire TV or Fire TV Stick remote.Phone or tablet – Android phone, Android tablet, iPhone, or iPad to configure the app.Fire TV – The Fire TV, Fire TV Stick, Fire TV Edition, and Fire TV Cube are supported.The app also has a manual ip address entry feature too. Auto Device Discovery – Auto detects your Fire TV or Fire TV Stick for simple setup.Scrolling, clicking, long clicking, and dragging – Works just like a regular mouse.Please update the Fire TV app for compatibility with the latest Fire TV OS update. Version 1.11 has been released for the Fire TV.