Clickbank has changed requirements slightly for their Pitch Plus pages. Now, anywhere you have a purchase link, image or otherwise, Clickbank would like the text to indicate that the customer is "buying" the product.
So...what's this mean?
Instead of "Add To Cart" or "Learn More", etc... the graphic or text should say "Buy Now" or "Purchase Now" or a similar indicator so the client knows that when they click on the purchase link, they are actually making a one-click purchase.
Make sure to remember this when you create new Pitch Plus pages on Clickbank. As an aside, if you're considering going to upsell pages, we've been doing quite a bit or work for our clients in this area, so please feel free to contact us if you have any questions.