Direct links are URLs that do not require any parameters for tracking.
For further information on how to use them have a look at this article in the Getting Started section: https://ujam.postaffiliatepro.com/affiliates/panel.php#189911-directlinks_explained
Dynamic and Deep Links are the same.
When you can’t find the link or banner of a product you want to promote in our shop you can create the affiliate link with your affiliate(/ Referrer) ID on your own. That’s what Deep & Dynamic Links are about. For doing that you find a Deeplink Generator in your UJAM Post Affiliate Pro Account: https://ujam.postaffiliatepro.com/affiliates/panel.php#Deeplink-Generator
But usually, we provide links and banners for every product. We’re recommending to use the given links, please leave us a note if you feel that any links are missing.