I'm not sure what to recommend. If you want to share read-only access to the OneDrive folder with mike@zubersoft, I'll be happy to try synchronizing your folder to my iPad to see if I can reproduce the issue. I did go through crash reports on iOS and adjusted some code related to OneDrive, so it's possible this might help with what you are seeing (at least with the app not crashing).
I did sync a OneDrive folder to my iPhone and it completely without any problems.
Mike
I did sync a OneDrive folder to my iPhone and it completely without any problems.
Mike