Documenting the process for having Logitech G Hub recognize your devices since there wasn't much information available online.
Note: in this case, I was trying to connect a Logitech G600 mouse to reprogram the programmable side buttons.
What worked for me:
- Unplug the Logitech peripherals from your computer
- Uninstall Logitech G Hub if has been installed before
- Open System Preferences
- Go to Security and Privacy
- Press unlock to make changes