Hi @gbg4,
Thank you for reaching out to us.
I’d recommend you to check our documentation of WPML https://theme.co/docs/wpml#translation
X/PRO theme comes localization-ready. All that’s needed is a translation file for your language. It means that you will have the translate it in your own language because the translation files are already there.
For more details about translation and how you can translate it to your own language, please check out our knowledge base https://theme.co/docs/theme-translations
You can change the font size of an icon from the Graphic Size option of the Classic Feature Box element.
Have a look at the screenshots.

Hope this helps!
Thanks