Problems to use blender

Hello to everyone I read this post about blender on Android https://blenderartists.org/forum/showthread.php?384316-Running-blender-on-android-(No-root-required-not-a-port)
I download it and work good but I have got some problems
1- I Cannot navigate on 3d view and do the Panning and or bit with middle mouse botton because the Windows vanishes.
2- I Cannot see the Exsternal SD-CARD
Could you help me?