After much testing, I found that the current theme version, coupled with WooCommerce 2.1.8 will allow checkout if anyone else needs to roll it back.
HOWEVER, I’ve now lost all prior order history. I know it’s in the database somewhere, as it’s all been backed up. How can I restore the data to show in my admin panel for the website so I can see prior orders until the new theme is updated/fixed?!
Any and all help is appreciated! Thank you!