I'm having this issue as well.
doc1977 "Hi folks, activate the developer mode (go into gearVR Service settings and tap version number 6times, then 4 hidden switches will apear.
Turning on "Allow apps without OSIG" and turning on "prevent GearVR environment from starting" (so or same meaning, my menu is in german) will allow you to use SLR app as intended."
How do you do this on S9? The version number is greyed out, you can't tap it.