Table relationships

Hi,

in my model I have a Date table, using it a slicer, Employee table, using it for usercode. there are 2 different tables for Sales and Returns. I created the relationship between the Date to Sales & Returns to filter the monthly sales and returns. Also created a relationship and connect Employee to Sales & Return to show the employees' name rather than the codes and also be able to filte the names in the report. the relationships are 1-* and single. Now that I run the report it works well for the returns but not for the sales, the numbers are blank. Please advise me.