macOS on File Provider - Identify non-supported files

On the Dropbox sync page in the Dropbox for macOS on File Provider there is the statement that:

"You are not eligible for the updated Derobox for macOS on File Provider at this time. Your Dropbox folder contains some file types that are not supported."

How do I find out what files these are and where they are?

I appear to be in a nasty half way house at the moment!

1 - I can only open half of the files in my local Dropbox folder - I get a message that the application (e.g. MS Office) cannot read the file;

2 - On the web client I cannot preview any file I receive the following error 'This file cannot be previewed because you are offline'. I am clearly not offline as I am accessing Dropbox!

3 - Desktop app states that it is updating 19,417 files and is not changing, there are no Sync issues identified;

4 - Sync appears to be working, I just can't access the files!

5 - There are no sync icons visible so I am unable to see the state / staus of my local files.

Dropbox Location = /Library/CloudStorage

Browser - Chrome

Op Sys - Ventura 13.4.1

I have spent hours over the weekend to try and find out what is going on.

The latest updates appear very unstable and have made the product virtually unusable.

Any thoughts anyone?

Thanks