Standard Notes Server not backing up to Cloud Provider

My YunoHost server

Hardware: VPS bought online / Old laptop or computer / Raspberry Pi at home / Internet Cube with VPN / Other ARM board / …
YunoHost version: 11.1.3 testing
I have access to my server : Through SSH | through the webadmin | direct access via keyboard / screen | …
Are you in a special context or did you perform some particular tweaking on your YunoHost instance ? : no
If yes, please explain:
If your request is related to an app, specify its name and version: snserver latest version

Description of my issue

Many thanks for making this excellent software available to is. Fantastic. I would like to raise an issue that I am having. If I try to do a cloud backup it doesn’t work. the process appears to work in that the key to paste back into SN is produced, a folder is created at the cloud provider but no files ever appear in the folder even if you force a backup

Here is what I did

  1. Account Settings > Preferences > Backups > Cloud Backups
  2. Select either provider (eg Dropbox)
  3. api provides the confirmation code
  4. Paste the confirmation code back into standard note
  5. force a backup
  6. Go to Dropbox.
  7. Folder Standard Notes is created but empty and has been all day!

Can anyone help me with this?