I'm using the Manfrotto Aviator backpack. It's quite big, but it's great to fit all my other camera gear in the same bag, and it feels like it's well protected.
Link: ManfrottoAviator D1 Backpack for Quadcopter
Maybe you have a more tech-experienced friend who can help you?
The range is not DJI's fault but EU.
1. Uninstall the DJI app on your device.
2. Download version 3.1.18 found in this thread, on your tablet: mod_3.1.18_fcc_v3.rar
3. Unpack the rar file you downloaded above using this app...
Have you managed to download the app? Thats the first step. Then it's just to install it like any other app, nothing special with drone apps.
Downloaded on the tablet itself, or on your computer? Here is one example on how to do it:
3.1.46 is out since fall. I'm using that one and have gone longer than you @Optikn3v. I'm at 1.5.40 firmware. Try 3.1.46 and see if it works better? Maps is working in that version.