Adding group to the Team Folder using API not working

Hello,

I am having issues with the dropbox api v2

I am trying to add group to team folder using the 2/sharing/add_folder_member

I am sending the request with this body:

{
  "shared_folder_id": :team_folder_id,
  "members": [
    {
      "member": {
        ".tag": "dropbox_id",
        "dropbox_id": :group_id
      },
      "access_level": {
        ".tag": "editor"
      }
    }
  ]
}

, and headers:

Authorization [Bearer :team_member_file_access_token],

Dropbox-API-Select-User [:business_account_owner_team_member_id]

The provided user in the headers is member of the group

This api call was working fine before, but since the last week always gives access_error - not_a_member error.

Can you please tell me how to fix this or if there is another way to add group to team folder?

Thanks,

Borche