date element can't get database field

I have a dynamic database item page, which has a date element that pulls information from the database. Before adding Previous/Next button this field was working fine, but since I added buttons that are connected to the database with “next dynamic page” the date element isn’t getting the date information anymore. When you reload a particular page it appears again, but only to disappear once you press the previous or next button.

What am I doing wrong here?