Hello,

You can insert the text in the area Before/After Add to cart button and this text would be the same on all the product pages: https://xtemos.com/docs-topic/product-page-options/

In addition, you can add custom content using Extra content options, please check this manual: https://xtemos.com/docs-topic/product-page-local-settings/

If you have any questions please feel free to contact us.

Best Regards