Why is my report in effectmanager empty?

This article answers the question of why you may experience empty reports in effectmanager.

In the reports module of effectmanager, you may experience an empty report. If you do this, we please ask you to clear your filters and apply your filtering criteria again. 

NB! Remember that your filters are saved, when navigating between the modules in effectmanager. 

I want to know more about the filters in effectmanager

If your report is still empty please check the following: 

Have I uploaded POS data for the wholesaler?
Do I have some filtering that may cause this?