Hi there is a bug here in v2.0. If you click on the "Customers" tab you get a list of the customers and the outstanding amounts due show correctly.
However... type something (part of a customer name say) in the "Search Customers" box and hit return, and the outstanding amounts shown on in the list on the resulting page is wrong, even showing outstanding amounts for customers who are fully paid and owe nothing.
Reverting back to the full customers list again shows the correct amounts.
Regards,
Mark