Woocmmerce email text edit

Hello,
I’m, knifemaker and craftsman from Czech republic and I have problem with woocommerce email and I’m already desperite.
Plugin fakturoid (invoicing) puts a few czech words to woo default email to download invoice and I’m not able to change them to english, also I need it there (customer must receive an invoice). But it’s Czech words on english email.
Common procedure don’t work (or I’m doing something wrong, I don’t know).
This makes me crazy.
Can you please help? Maybe set it with team viewer if you know how? I’m unfortunately without money now (corona etc..) and I can spend a few bucks only or if you like knives, brainteasers or forged jewelry we can make some deal or barter..

Thank you
SHOK