Affiliates + Marketpress, how to configure?

Hi,

I'm using Affliliates plugin together with Marketpress (with addon installed)

I can't seem to figure out how to make the whole combination work.

First, I've set up affiliate commission in Marketpress settings.

For the test purposes I've created a new wp user whom I would like to use as an affiliate.

Then I logged in as this user and configured his paypal email and enabled affiliate links.

But then, when I'm using affiliate links, like ?ref=ref1-04 nothing appears on the report graph (no clicks at all).

My goal is basically to pay commission to my affiliates for every item sold in my Marketpress shop, how do I do that?

Thanks for assistance.