Web interface doesn't load
By default it will load links in webkit. To change this to an external browser open your Google earth preferences.
You will then need to keep your browser open alongside Google Earth and download KMZ files.
Google Earth on Mac
Click 'Google Earth Pro' > Preferences..., General Tab. Check 'Show web results in external browser'
Google Earth Linux
Click Tools > Options, General Tab. Check 'Show web results in external browser'