zazz

No, the above did not resolve the issue as the other emails are being sent, also when you update the admin emails list those emails start working again so it’s not a problem with the SMTP server or the emails being blocked, but with the woocommerce script
but i’ve enabled the mail logging script to see if it will log any issues the next time this happens

fixed by updating the meta data directly:
update_post_meta($id, ‘_requires_manual_renewal’, ‘true’);

instead of using the:
$subscription->update_manual(true);