The demo is available here - it's a web app so no download needed:
https://demo.hexgs911.com/demo/gs911/splash
Regarding the calibration and height setting on your bike, unfortunately not, the GS-911 only works with the learned and default values - i.e. if you feel your suspension isn't working as you expect, you can calibrate the entire unit or just the spring, and it will revert to defaults and start from scratch on its learning adventure.
Kind regards