You can print merit badge certificates from a PO in Scoutbook Look towards the bottom of the PO screen. Scoutbook admins and certain leaders can access POs via the Needs Purchasing report on the troop menu. To access old POs click on the troop menu, then Reports then Needs Purchasing Report and go to the bottom of the screen.
If you have alignment issues: make sure you do not have a print setting checked that is auto-sizing the output. On templates like this, all re-sizing options of any kind need to be deselected in your PDF printing process.