oh, ok, im thinking base android OS system problem..
well... i had some issues after the recent update and my drone is headed to autel for diagnosis.. but, with my similar problem on the explorer app, and went into the APPs section of the android OS, found explorer and top right had 3 dots, i didnt have the option to uninstall at first, just to uninstall update, so i did, and then it gave me the option to uninstall the app, which i cringed at, so i retried to update the app to latest version and it recovered and worked fine after.. some small issues but was workable until other issues with the aircraft came to light so off the drone went to autel.. but sas far as the app, try it.. nothing to lose
Autel has been great with me.. so dont believe everything you see about bad cust svc..