I had this issue for months...Just figured out a way to make it work after reading some posts here ...
Basically, you are going to delete and add back LogiPresentation app in System Settings under 2 different locations and add them back.
Assuming you have the latest version of the app installed (at this time it is 2.00.43), try this. You can also run the LogiPresentation Uninstaller in Applications > Utilities but it may not delete everything in the Settings.
Find the LogiPresentation App. In Applications, an alias for Logitech Presentation is present. Select that, right click and choose show original.
LogiPresenation is found in HD>Library>Application Support>Logitech>LogiPresentation>
You can download the latest installer here.
Go to System Settings>Privacy & Security>Accessibility and select LogiPresentation (if it is there) and click on - to delete it. Then, click on + and add it back. You will navigate to where the app is located to add it back
9it may work just using the alias). Make sure the toggle is on.
If you need to, you can also go to System Settings>Privacy & Security>Bluetooth and select LogiPresentation (if it is there) and click on - to delete it. Then, click on + and add it back.
Run LogiPresentation and connect the Spotlight device to the computer via proper cables and use the dongle to connect.
You may get warning asking you if LogiPresentation can use Bluetooth. Accept.
Should work.