just had a chat with the customer support, does not sound promising:
12:24 PM | from FORSBERG+two: I see you want to incorporate order.metafields in your template. However, I’m afraid it is not possible as our apps do not support accessing Metafields associated with Shopify Orders, Products, or Customers.
12:24 PM | My Name: Hi
12:24 PM | from FORSBERG+two: For a more detailed explanation of this, you may see our article here: https://help.forsbergplustwo.com/en/articles/6010415-metafields-support#
12:25 PM | from FORSBERG+two: I know that this is not the answer you are expecting to hear, but I hope it makes sense.
12:25 PM | My Name: thank you for your reply
12:25 PM | My Name: that’s a bummer really…
12:25 PM | My Name: I understand..
12:25 PM | My Name: any workaround?
12:27 PM | from FORSBERG+two: Unfortunately, at the moment, there is no alternative workaround available, but of course, our apps would love to incorporate it if it becomes possible in the future.
12:28 PM | My Name: ok.. well then this is a showstopper
12:28 PM | My Name: thank you for your time