Hi10 Pro "Unfortunately 'app' stopped working" error

Hi10 Pro with Android 5.1 won’t run an app downloaded from Google app store.
Error is: Unfortunately ‘Link’ stopped working. Options: OK / Report (assume to Google).
Tried factory reset and about anything else, but can not get rid of the error.
The app does transfer AP Wifi data to the tablet and supposedly runs on Android 4.4 and higher. Anyone has an idea?
Understand HI10 Pro is not a Google play store certified tablet, but still.