Hi,
I’m associated with EDI Shack so not unbiased, but we do offer EDI integrations with WooCommerce or Shopify, and even though the main EDI functions are done through either a program or service, we do have a WooCommerce plugin to help monitor the EDI.
We also have few a FREE documents on getting started with EDI:
Getting started with EDI: https://edishack.com/pdfs/FAQS-Getting%20Started%20With%20EDI.pdf
website: https://edishack.com
