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Paste the code to your X-Cart website’s HTML field.
Next, go to your X-Cart store editor and find the HTML field. It is most likely in the form of an HTML/Code widget or module which you can find on the X-Cart’s editor. Add it to your page, and paste the Corner Pop-up Builder Embed Code you’ve copied before to the HTML field.
Save and update, and that’s it, you should have Common Ninja’s Corner Pop-up Builder app on your X-Cart store.