From you screenshots it looks like a iOS device where webXR is not supported unfortunately. Apple only supports webxr with safari on VisionOS and even there not fully.
In http there are still missing images. I got it so it no longer says that, now once I click open, it just gets stuck with this spinning wheel. The WebXR Not Supported page doesn’t show anymore.
I sat on that page for 30 seconds and the wheel was still spinning. Could BabylonJS take this long to load? I’m hosting it on an SSL cloudflare tunnel if that could make any difference.