Installation succeeded, no need to retry  
Confirmed  
Steps to Stop Using the Plugin  
Uninstall from Firefox  
It will:  
Proceed  
Uninstall plugin  
Phase 1  
Phase 2  
Phase 3  
Tap Uninstall from Firefox  
Tap Uninstall plugin  
start cleanup  
Disregard  
Beyond the Firefox Add-on Market  
Restrictions  
Exposure  
Tracking