If the Orders page returns nothing, check in this order:

  1. Search time range: the start time must be earlier than the order creation time, otherwise the result is empty (the most common cause);
  2. Store authorization: expired or incomplete authorization prevents order fetching — try re-authorizing;
  3. Shopify stores: verify Store ID, API URL, Client Id and Client Secret (you must use the default *.myshopify.com domain assigned by Shopify, not a custom domain).