This isn't growth related really, but one thing that is a "minor" detail that you could fix is linking your domain to Shopify so that your customers stay on www

This isn't growth related really, but one thing that is a "minor" detail that you could fix is linking your domain to Shopify so that your customers stay on www.relovedapp.co.uk instead of being redirected to relovedapp.myshopify.com.