Well, that's true. If you know coding, then everything is possible but if you will read Item Support Policy, you will understand that files customization are not allowed because of the obvious reasons.
Sorry but we can't because as we wrote above, files customization are not allowed. If you want to customize your site using child theme and don't know how, you need to contact with your web developer.
As we can see, you have no idea about child theme and that's why we suggest to contact with your developer. If you look at https://codex.wordpress.org/Child_Themes you will understand that child theme works only with 2 files: style.css and functions.php
Sorry but we do not understand what's rude here. You are asking us for something (files customization) what is not allowed, we are telling you that such kind of support is not included and you are telling us that we are rude? We only found the facts and we had no intention to offend you. So if we sad something wrong, then we really sorry.
Comments
yes, it is possible. You can change all labels under Theme options > Translate section.
Thanks for understanding!