I have deleted and reinstalled both the iRealb app and the Brother iPrint&scan app. iRealb still does not list iPrint&scan as an available option to open PDF documents. I hope the devs fix this soon. I have a passable workaround, the JPG still opens to the brother app, so for now I'll just use JPG instead of PDF to print these pages - but for convenience sake I hope they fix this in the next update...