Affiliates usually monitor timestamps between free accounts, trial periods, and eventual paid upgrades to see where delays happen. Comparing upgrade windows across campaigns reveals which traffic sources bring faster or slower conversions. Logs of follow-up emails, reminder clicks, and returning visitors help explain why some users upgrade weeks later instead of immediately. Looking at repeat visits and coupon usage can also connect delayed purchases back to the original affiliate. These patterns help BMF.io credit commissions improve nurturing campaigns, and identify affiliates whose referrals convert steadily over longer periods.