Android should automatically validate the IndoorAtlas Positioning app deep link URLs configured to the app, but if there's a delay or for some other reason the link doesn't trigger the correct application, please follow the guide below to manually enable links for IndoorAtlas Positioning. 

First, go to Settings --> Apps --> IndoorAtlas Positioning. 

Then select "Set as default". 

Alternatively (depends on your Android version), search "Opening Links" from your Android settings, open as well as the IndoorAtlas Positioning app (or IndoorAtlas Tracker, if you're using it instead). 

From both of the above, you
Next, select "Supported web addresses".

Finally, enable the supported link mobile.indooratlas.com. 

Now, the next time you open the mobile.indooratlas.com deep link, your Android device will open a dialog to let you use the link to start the corresponding app.