VR View for the Web - Accessibility

Question

I have inherited many embedded Google VR Viewer (VR View for the Web) pages on a website that I am to maintain.

While doing my accessibility audit all pages with this simple Google VR viewer came up.

I have read through https://developers.google.com/vr/develop/web/vrview-web?authuser=1 and I am unable to find a way to add a simple title or aria-label into the code that is injected by Google page.

I have been unable, over the last few days, to find anyone interested in anything similar.

While I realize that VR inherently is young and perhaps does not have much in the way of accessibility built in I thought there has to be a way to get Google to add some tag that assists users with visual impairments to, if not use the tools, skip over them.

Any assistance or suggestions of reading material would be appreciated.