I see that you have added translation to the QR code in qr.php
<?php esc_html_e( ‘Check in for this event’, ‘event-tickets-plus’ ); ?>
<?php esc_html_e( ‘Scan this QR code at the event to check in.’, ‘event-tickets-plus’ ); ?>
Although these strings is not showing up in the po file to make a translation. Could you please fix that?