How to set up things. Autel's way
You could try this first . Click on home icon on bottom, click on
system settings,scroll down and click on Security, then in Unknown
sources , allow installation of apps from unknown sources.Check the box.
Note
I wouldn't risk installing different browsers, and apps, or trying anything if tool is out of it's update
and warranty period and having a back up of the Scan folder if you got the tool second hand.