Received a reply from Facebook tonight:
Based on my understanding you are having issues connecting with WooCommerce.
We understand how important it is for you and your business that this is resolved. I will do my best to assist you.
As I checked, we are currently investigating an issue with WooCommerce V2 integration. We will reach out with more information once resolved. Thanks for your patience while we resolve investigate.
Meanwhile if you have any other concerns, please do not hesitate to contact us at anytime. We will be glad to be of help.