Here are some FAQ for your reference

• Q:	How to use Netflix better?
  A:	Netflix is available on the projector's homepage. Due to the update of Netflix, when you use Netflix on the projector, please use the mouse mode of the remote control or the mouse included in the package to operate it. The remote's non-mouse mode will not work, please use a physical mouse or the remote's mouse mode. The instruction manual has detailed instructions for installing and using the physical mouse.
  Q:	How to cast screen using your Android phone?
  A:	Step 1: Turn on the Wi-Fi function of the projector and connect the projector and mobile phone under the same wifi. Step 2: Please find ‘MitacastReceiver’ on the projector page and open it. Step 3: Turn on the screen casting function on your mobile phone and connect to the projector. *Note: Due to copyright restrictions, content from Disney+ and other copyrighted content cannot be screen cast.
  Q:	How to use Apple mobile phone to cast screen?
  A:	Step 1: Connect the projector and Apple mobile phone to the same WiFi. Step 2: The first time to use Apple mobile phone to cast screen. You need to open the AppStore on the projector's homepage and download ‘AirPin PRO’. Step 3: Enable ‘AirPlay’ service before using Apple mobile phone to cast screen. Step 4: Apple mobile phone open ‘screen mirroring’ - find the projector to connect the projector.
  Q:	How to fix Disney+ not working?
  A:	Step 1: Uninstall the downloaded Disney+. Step 2: Please click AppStore in the homepage, and find AppStore in there, click update. Step 3: Once the update is complete, please re-download Disney+ and it will be ready to use.
  Q:	What if Wi-Fi is always disconnected suddenly during projector use?
  A:	If the projector is connected to 2.4Ghz WiFi, the WiFi may not connect to the WiFi due to network band conflict after the mobile phone and projector are connected for the end of the projection. You need to manually turn off the on/off button of the WiFi settings and turn it back on again, after turning on the WiFi again, the WiFi will be back to normal connection.
  Q:	How to focus the projector？
  A:	Step 1, place the projector on a horizontal surface Step 2, adjust the angle of the projector, you can adjust the elevation of the projector up and down Step 3, if the projector is not displaying a rectangle, you can move the projector horizontally from side to side until the projector is displaying a standard rectangle. The last step is to focus the projector The GM200 projector, GM300 projector and GM600 projector can be adjusted above the projector lens. The GM500 projector requires motorised focusing using the remote control.
  Q:	How to zoom in and out of the screen?
  A:	Step 1: Please place the projector on a horizontal surface. Step 2: Please find ‘Screen Zoom’ in the settings and zoom in or out the projector.