Pour utiliser les extensions Android, vous aurez besoin de Firefox pour Android. Pour découvrir les modules complémentaires pour Firefox, veuillez visiter cette page.
Please try to switch to local storage: go to the 'Global settings' tab and uncheck 'Sync settings across your devices'. This problem has been fixed in new versions but still possible for those started using long time ago. Although it should've been resoled by 'Delete all settings'
