Please return to the Publish Workspace, Relationship collection and bring up the Family Group sheet. You said that you had NO FACTS at all, AFTER you removed the Preferred only Check mark in the "Items to Include".
That would tell me that in the Items to Include window, you had NOT Facts listed in the Left side of that Window.
The "included Facts" list, in the Left panel of the Items to Include, is where you Select the FACTS you want on the Family Group Sheet. The Green PLUS (+) is where you select the Facts you want displayed. Each of the Facts has options. You get to those options by selecting the Fact, in the upper part of that window, and there will be a bar at the bottom with the Fact Options.