Many pieces of hardware come with a standalone application and driver as well as an ASCOM driver. For it to work with SGP you need to specifically install the ASCOM driver. It looks like you can find that here:
If you want to check if it's installed you can open up the ASCOM Profile Explorer application in windows and expand the "FilterWheel Drivers" section. For SGP to recognize it, the driver needs to show up there:
Thanks,
Jared