Please contact us through Due > Help (from the side menu) > Email. This would include diagnostic information for us to better troubleshoot any problem.
If you're contacting us about a problem, the following information would be very helpful:
1) what did you try to do,
2) what did you expect to see, and
3) what actually happened?
If there are error messages, please provide the message or a screenshot of the error so that we can better help diagnose the problem.