After you press ‘Create Order’ you may experience a long buffering screen, this means that you have not set up a direct store on your account.
You first need to create a manual order by following these steps:
Go to Settings
Select Marketplace & Ecommerce Integrations
Select ‘New Store’
The store to set up is called ‘Other’
Please follow this guide for more information on how to create a direct store.
Once you have created the store, please go back to the orders page and create a new order.