August Smart Lock Pro Always Added as Z-Wave Switch

That almost always means that the specific “fingerprint“ of the device has not been included in the appropriate edge, Driver, so it’s just picking the lowest common denominator Z wave device, which is a switch.

I’m very tired today, so I’ll have to leave it to others to help you with the next steps, but begin by going to the advanced page of the official web interface, and see what fingerprint shows there. The following FAQ explains how to do that:

FAQ: Manufacturer/Model Shows All Zeroes

But the main point is that yes, that happens, most commonly when your specific model has a fingerprint which has not yet been listed in the official edge driver.