ALREADY PRINTED YOUR BADGE . . .
This error message appears on the iPad when the "Allow Attendee Re-Print" option has been set to "YES" in the iPad's Kiosk Options, and the Attendee is trying to reprint their badge.
FIX: If this was not your intention, to restrict the ability for badge reprints, then toggle instead select "NO" for the "Allow Attendee Re-Print" option.