Log in your Eiz OMS Basic Account > Click the Marketplace/Store Icon on the dashboard, Click Add more stores button, then Click Amazon button.Click “Click Here” at the pop-up page of Add Amazon StoreYou will be automatically redirected to the Amazon login page, please Login with your Amazon credentialsEIZ Develpor’s name and Developer ID will be filled in automatically, you can directly click NextTick the Authorization confirmation, and click Next.Amazon will show your API information (Seller ID, Marketplace ID, MWS Auth Token)Go back to EIZ, copy and paste Seller ID, Marketplace ID, MWS Auth Token on form as picture show. (store name can be customized), and click VALIDATE and SAVEYou have now completed the Amazon integration, switch on order sync, and start to process your Amazon orders in Eiz OMS Basic!