Mod Certificate by sir Mark Nelson, QR code not displaying by Jayson Cleofas - Monday, 28 October 2019, 9:20 AM Number of replies: 0 moodle version: 3.3mod_certificate version: 2016052300$pdf->Image($certificate->qrcode,18,135,35,35);is there any requirements that i need to check for the qr code to work? Average of ratings: - Permalink Reply