Posted to Samsung Gear VR forum on June 6, "My photos gone" ... only replies were several "me too", "same problem".
My sole function for the Gear VR is surround photo viewing of my own pictures. As such, the device is as good as dead to me.
When I select 360 Photos I get the menu  New Photos,  Weekly Destination,  Explore the World,  3D Art,  Nature, and  My Photos. Clicking any of the other choices  through  works. If I select  My Photos, the top label "My Photos" appears above tabs "Newest" and "A to Z". Whatever content was displayed from prior choices  through , the prior content remains ... it is never replaced with my photos.
As I explained in the June 6 post I've uninstalled all Oculus apps and reloaded them ... no joy (still doesn't work).
The 360 Photos app used to work perfectly with all surround photos taken on my phone, my own surround stitched photos, and surround photos from a Gear360 camera as well as an Insta360 camera. No My Photos appear anymore in the 360 Photos app My Photos since the last update.