This is how I updated my code to get it to work.
if ( $this->instructions && ! $sent_to_admin && 'emt' === $order->get_payment_method() &&
( $order->has_status('on-hold') || $order->has_status('pending') ) ) {
echo wpautop( wptexturize( $this->get_instructions( $order ) ) ) . PHP_EOL;
}
}
See if that works for you.