Shopify Plugin for Headless React/Next Site

We have a headless shopify site that I’m looking at builder to integrate with. I tried adding the https://www.npmjs.com/package/@builder.io/plugin-shopify plugin, and set the API keys. It only loads a partial list of products to choose from when I create a product field. I’m also not seeing the UI components referred to in the readme. Do you have a reference site for how to connect a page to a collection? How can I create a component that is configurable (let marketing choose what collection of products they want in a landing page as an example? More examples would be helpful. I’ll keep digging in the meantime. Thanks. Fortunately we’re starting out with a blog, so as soon as I have a design, I can set up a page, and then create a template for marketing to work with… But I’d like to be sure that we can use builder easily when it comes time to start creating new landing pages as well.