Big Z Fabric review for Dr Cart Shipping Rates & Rules

Jan. 28, 2026

One day we saw our app just stopped working (cart estimates). I reached out and the developer responded with a detailed issue with Shopify's API and they recommended I take it up with Shopify to encourage them to escalate their API update. I did that and the next day Shopify fixed their API endpoints which allowed the app to work again. A bit of an inconvenience but proactive support helped us work together to get it up again.