How to backup and transfer all settings of CIS?

All settings were gone every time I uninstalled (even I didn’t select uninstall completely) and reinstalled.
How could I backup and transfer all settings? Thank you.

Advanced Settings > General Settings > Configuration . . . choose your Active Configuration then Export

It can then be Imported to your new installation

Where is “Advanced Settings”? I couldn’t find it.

Tasks then Advanced Tasks, from the Home screen