I don't think my sale/purchase tracked. Why not?
There are certain situations in which clicks wouldn't track and links won't affiliate. Also, there are times when cookies can get replaced. For example, if someone goes to a coupon site looking for a free shipping or discount coupon, that would override the VigLink cookie and you wouldn't get credit for that purchase.
Also, we do have some merchants in our network that do not pay for each purchase, but pay for clicks.
As we are only able to track a click until it reaches a merchant's URL, errors resulting in the disruption of tracking can occur with a merchant or within an affiliate network.