In the ReCharge Dashboard go to the Settings and select Translation. From here you can edit the fields one at a time to translate as you desire. Though, this will only affect the Storefront Portal, not the portal hosted by ReCharge. Modifying these translations would be used if you'd like your site to be primarily in a foreign language or even if you just would like to change the wording.
Note: If you cannot find the translation you're looking for in this section, then it would not be included in the ReCharge standard turn-key solution. Contact us and include a screenshot and/or a URL of what you'd like to translate and our team can see what can be done for you.
Take note of the tabs at the top, you can switch between Checkout and Customer Portal. Here's what a fully translated checkout looks like:
Customize the Cancelation Reasons
The Translations section isn't just for language, you can also use it to customize the multiple options for cancellation reasons in the Customer Portal tab on the Translations page.