Template not found

Hello,
I have WP HTML MAIL and WOOCOMMERCE MAIL version.
I am trying to find my mail templates and change product table….and I just can’t find it anymore. They are still there as working from website https://www.regence.be but I cannot find where to change.
Should I go in this screen? https://i.imgur.com/2TgcCcf.png
Thx,
Pierre