There are a few ways to add POWr Popup to Shopify. You can add it to your homepage only, or to every page in your store, or even to a single page, like a specific product or category.
To add a popup to your store's homepage, you'll first need to find your store's index.liquid HTML file. Don't worry! This isn't as scary as it sounds.
Adding a popup to every page is pretty similar to adding it to the homepage. You'll need to find your store's theme.liquid HTML file. Note that by default, the popup will appear once per week for every visitor, but you can change this in the POWr Editor.