Please check the video tutorial to see how to save the translation file correctly. You can remove the plugin and translations would remain. Also, translations would remain after each theme update.
In order to translate the WooCommerce strings, you need to create a separate translation in Loco > Plugins > WooCommerce in the same way as shown in the video.
I know how to use Loco Translate. I was asking for something else 🙂
The problem is, Loco doesn’t find the phrase “Buy now”. Anyway, a few others from the latest version of the theme do not either. For example “Frequently bought together”. But I don’t need them.
Please insert the site admin access into the Private content below the message area. We will take a closer look at the case.
Please, confirm the permission for plugins deactivation, and switching to the parent theme. As soon as we complete the testing we will enable all back, however, the site would be without plugins for 15-20 min. You would better make the full backup of your site.