I would suggest you open a ticket with our Technical Support using the 'Contact Support' link in the About dialog. That will make sure the ticket contains all the right information and is routed to the right team.
Please add some screenshots from your task showing the segment(s) you are using, the execution time, the dependency to your segment map as well as from your segment map showing the expected numbers. Assuming your segment map creates a segment with a population greater than 0.