I've been going nuts all day trying to figure this out. A few days ago the checkout was working fine. Now when I go to complete an order I get this 'Error 405: Unable to create order. Please try again.'
The order is listed in the woocommerce backend but it's missing the address and the order total.
I've worked through all my plugins trying to disable them and see if theres any conflicts. Is there a good way to narrow this down instead of trying to play pin the tail on the error code here??