When downloading a paid Shopify theme on the Shopify Theme store, you don’t actually pay for it until you publish it to your store. Try all of our themes for free with your own products, brand colors, and customizations. Only pay once if you publish the theme to your store.
Themes are licensed to use for a single store only. The theme you purchase from the Shopify Theme Store is licensed exclusively for the store you bought it for. Using the same theme for multiple storefronts requires the purchase of one theme license for each storefront URL in use.
Please go to Online Store > Themes > Actions > Edit default theme content, search for the text you need to change, and insert your own text to overwrite the initial one.