Thank you very much for pointing out needed adjustments in VR Guest. It was originally developed for the GearVR, but unfortunately it appeared to be too much for the Samsung Galaxy S6 phone to manage yet for newer phone models that are compatible with GearVR.
When we uploaded it to the HTC Vive some brand new bugs appeared. \
We have since revised the app and fixed many of those bugs in the hopes that the app/experience is more enjoyable.