When I print the sale sheet, there are large gaps on the pages and instead of printing on 2 sheets, there are 3 or 4. It looks fine in ClickForms.

Somewhere in the sale sheet, a cell/field has been filled with more text than it can present on a printed page when printing the sale from DataLog.
Search the page for any cells that look “double height” as a clue to a possible text overage.