Checkout and payments on storefront API

[arrenmarketing]

We are trying to integrate our Shopify store into a new mobile app we're creating on React Native. We've managed to import the inventory through the Storefront API but struggling with the checkout and payments. Can this be done with a normal Shopify account or can it only be done if our account is Shopify Plus? We are currently just getting authentication error every time we try to use the checkout API and not sure what we're doing wrong.

[mumar1052]

I'm facing the same issue. I've created a custom app using Flutter and Dart, and I've completed all the steps of integrating the Shopify Storefront API, such as fetching product details and adding them to the cart. However, I'm now encountering an issue where there is no checkout process with payments in my app. Can anyone provide assistance with this?
Thanks in advance!