Okay, that will be it, @Kai58. I was looking at your guidebook in Chrome on a laptop, and everything is there, including descriptions and a map with location pointers. What I see in the app on my Android is a big map with location icons (that are nicer than the pointers) and thumbnails across the bottom of the screen. This (the app view) appears to be the focus of the developers at the moment.
I agree that it should look good no matter the browser/device, but maybe browsers on phones are low on the list. I think most prospective guests will look at it on the app, since that is heavily touted ("Get the app!"), and at least that does look good.
If guests are having trouble, point them to the app or send the link. I have a hardcopy in my listing, too, for when guests are on site. Saves a lot of grief, since, as you have seen, the guidebook has its periods of glitchiness.