Unusual Behavior

Operating system

Android

Joplin version

3.0.8

Desktop version info

N/A

Sync target

OneDrive

What issue do you have?

I have the Joplin app running on two android phones and a bizzare situation has occurred. Any advice on how to go about sorting it would be greatly appreciated as I am worried about making things worse.
On phone 1: In my main notebook there are two notes I created most recently and the rest are gone. About 1200 missing. In the conflict notebook there are 25 notes which were all were edited in the last 3 weeks. Trash and 'all notes' are empty.
On phone 2: Most of the 1200 are there as usual. Some are missing. No conflicts. Trash is empty.

Unfortunately I don't have a computer to install the desktop version of Joplin. I sync them to OneDrive and have 90 day note history enabled. Exporting works on phone 2 but not 1, saying there is nothing to export.

Any help to resolve this?
Thanks so much