Hi Francis!
Thanks for getting in touch with us!
That is definitely a strange issue you are having. Let me try to help you with the troubleshooting.
the payment returned from Paypal with the SKU for an event that expired on June 08, 2017
Could you please let me know where you are seeing this information? If it’s on a WooCommerce order, is the order for the right ticket product?
Could you please share with us (in a private reply if you’d like) a screenshot of the edit order page for that specific order? Also, please share a link to where we can see the ticket you are selling in your site?
Ticket payments are all managed by WooCommerce, but I’d like to see if I can spot anything strange that would indicate the source of that behaviour. In the meantime, I’d suggest you get in touch with WooCommerce support to see if they can offer some insight on this matter.
Let me know about that.
Thanks,
Victor