App MAPS Made EASY on DJI Smart Controller RM-500

Hi,

I tried to install Maps Made Easy App on my DJI SmartController RM-500, directly from the Smartcontroller browser.

Once connected on Google Play Store, the Maps Made Easy App is selected.

Then a menu appears showing my smartphone, nothing else within the list.
After having selected "Install" the system start to show a idle circling sign...and that's all.

The download seem to go through correctly, however nothing happens so far...no icon, no auto-launch, no error message.

The download and installation folders are empty, no file at all. 

Would someone have a magic trick to get rid of this situation?

Thanks a lot for your support.

Laurent