How can I check which objects like files,folders and space used has been changed after a specific time or date? In short,how can I get a point-in-time change of my dropbox resources?
Unfortunately there isn't a way to do this exactly with the Dropbox API, but I'll pass this along as a feature request.
The closest thing would be to process all of the entries from /2/files/list_folder[/continue] with path="" and recursive=true, and keep track of the server_modified and total size values manually, but that would be more work and may not give you exactly the right values you're looking for.