Hi, the issue is about Shopify plan.I upgraded the account to the higher plan and the issue gone.

Thank you for your help. Unfortunately, 403 Forbidden error still occurs after I granted the Read All Orders permission from Partner Dashboard. Did I miss anything else? My gemfile:source 'https://rubygems.org'git_source(:github) { |repo| "https://gi...

I was using shopify_app gem and got 403 error with this code:ShopifyAPI::Order.all[0].total_priceI was able to create a Product:ShopifyAPI::Product.newor read all Products:ShopifyAPI::Product.all[0].titleThis is my configuration:ShopifyApp.configure ...