Hi Chouby,
Ah, that might be the problem. I did not know what my theme " slug" is. I tried to find my theme slug by Googling it, but could not find anything. I tried several names, but it did not seem to have an effect (for the shopping cart part). So, I figured it was just some way to make the program identify my changes or something. Would the theme slug be the name? So, for the Customizr theme, would the slug be "customizr"? If not, where do I find this?
What do you mean by "Once it is done just use the plugin codestyling localization to translate the new strings (don't forget to rescan)."? Would that just be using the " String Translation" tab in Polylang?
Sorry for all the (obvious) questions. I am really quite new to this and really appreciate your help! Thanks!
Casper