I just flew my
Inspire 2 with the Crystalsky. I can see a distinct difference in Free and Follow modes. Here is a good way to test if your Free and Follow modes in Spotlight Pro are working properly. Start Spotlight Pro and set to free, fly a distance away then create a square box around yourself or an object near you then fly to the left or right. The camera will stay pointed at the object you selected but the copter will not stay pointed at the object you selected. Now stop moving the aircraft and select follow mode, watch to see if the aircraft rotates to the same angle the camera is, and pointed at the object you previously selected, if it does the system is working properly. If it doesn't then you have some sort of glitch.
Edit: I tested mine with both the Crystalsky and an iPad mini4 with the same results.