The option of editing email templates in html is simply summarized with wordpress update, it is necessary to change the email information that the order confirmation and now is not possible.
Anyone going through the same thing, what should they do, go back to the older version of wordpress?
Use version 5.3.2 currently and with the current version of woocommerce.
Thanks for the reply Mike! Waiting for new version.
gmacev the solution I found was to disable the fields and create new patterns now with the translation, it worked perfectly.
I hope to have helped.
Obs. Translation para pt_BR (Portuguese – Brazilian)