Aero experiences never load on iPhone

Hoping that someone can help me with this ongoing problem. I build my experiences on my Aero desktop (works perfectly, no notes) but when I open them to record and share on my iPhone 8, running iOS 16.7.1 they load to an untappable Tap to place screen. Only way out is to reboot the app, which returns to the menu, reloads to Tap to place screen. etc etc. This happens 97% of the time, I think I've managed to view my creations in live AR about 3 times in the past fortnight.
Phone has plenty of storage, no other issues, happens across all wifi and data connections.
Pretty hard to stay excited about our AR future from a blank screen, even harder to keep my clients excited about THEIR AR future on a blank screen. Any ideas to get past this one?
Thanks in advance for any advice at all 🙂