Linkshare processes a lot of purchases on a daily basis, so it can take a few hours for your purchase to show. Typically if you don't see your sale track within 48 hours you can contact us at email@example.com. Please send us a screenshot if possible of what you see on your account as well as the affiliate link you used. This can help us support you and look into your request to the best of our abilities.
Also, before you promote any Udemy course we always recommend that you test your affiliate link for clicks and sign ups.