pmpro affiliate not keeping track of affiliate sales, log file included

i did a test transaction twice for an affiliate sales and is no keeping track of the sale, this is the log file\

[08/13/2015 4:37 PM] – ——– Log File Reset ——–
[08/13/2015 4:42 PM] – SUCCESS : Paid Membership Pro Integration – handling pmpro_updated_order hook
[08/13/2015 4:42 PM] – SUCCESS : Paid Membership Pro Integration – payment_type: , status: success, txn_id: 3D9A971DA2_2015-08-13, amount: 1
[08/13/2015 4:42 PM] – SUCCESS : Paid Membership Pro Integration – Tracking data is not present. This is not an affiliate sale

it was an affiliate sales because I use the aff link , and the plugin registered the visit. any idea of the problem.