Sync issues on iPhone 15 Pro Max

I'm on Gaia GPS 2024.3 with a new iPhone 15 Pro Max.  Many waypoints and photos visible on the website do not sync to my new phone.  One possibility is that on my older iPhone I had both the old Gaia app without the yellow border on the icon as well as the new app with the yellow border.  Is there any way to get all the items stored in the web browser version of the app to come over to my new phone?  I have tried the manual sync in Settings several times with no success.