I'm unable to restore the files located within a shared folder

I opened my dropbox account today and found a shared folder missing.

We are a small team of 4, and it was not any of us that caused it.

 

Dropbox records attribute the action to one user when I check the deleted files section.

However she was not at her desk at the time of the action.

I can verify that as I sit beside her at work.

 

I restored the shared folder, however the majority of the folders and files contained

within it, are still not restored.

 

I checked 'activity' in Dropbox and can see that the 'member' attributed to this is

when I check there is different from the team member I mentioned earlier.

In the 'activity' section, the action is attributed to a member called 'Dropbox'

we do not have a member in our team called 'Dropbox', so I do not know what that means.

 

The 'activity' record shows thousands of files removed with the following 'Activity'

listed as -

 

Activity:Unshared file/folder by clearing membership

Accessed From: Unknown

Location: Unknown

IP Address: Unknown

Participants: All on team

 

I have raised a ticket with Dropbox support.

I have not found them to be very helpful yet.

 

Can anyone advise me what could have caused this?
Can anyone advise me what solutions I have available to explore?