I have disabled all plugins except woocommerce 2.3.9, coursepress 184.108.40.206, and woocommerce Stripe gateway and reverted to the default theme. I try to purchase a product (even ones that are not courses) and I get :
Once I turn off coursepress I can check out as normal.
I have tried reverting woocommerce to 2.3.8 with the coursepress 220.127.116.11. Same Error
Tried reverting coursepress to 18.104.22.168 with both woocommerce 2.3.8 & 2.3.9. Same Error.
I have already granted access.