Did anyone find a fix ? I have the same issue. I updated woocommerce today to 3.0, tried to make an example order and the order just gets set to “On Hold” and no email whatsoever is sent to me (or my client, which awaits for me to fix his shop).
It’s frustrating that they changed something like that:
“As of WooCommerce 3.0.0, a delayed CRON event is used to send emails”
I don’t know if the issue is because of that, but I can’t get any emails to be sent regarding the orders now.