Hi!
Are you referring to the Seller Details (the sections of the listing that say "Payment" or "Shipping" etc.) or just the description section of the item? The reason I ask is, I previewed several of your saved listings and was able to see the descriptions just fine, but there were no Seller Details selected to use (which is why they wouldn't be seen in the preview.) Here's a link to the FAQ about Seller Details
Seller Details FAQ If you aren't referring to those sections, then I would recommend that you file a support ticket so that our team can take a closer look at the issue.
Customer Support