fewc and 9mail

When I customize my checkout page with your FEWC plugin and add new fields they don’t show up on the email customizer template! Do those 2 plugins work together? How do I add the FEWC custom fields in the 9MAIL templates? I have it set up in FEWC that it supposed to send what’s in the fields on processing order email and all that… Let me know how you can help. Thanks!