Update Response URL and receipt URL in Authorize.net to proper setting found in Account > Transaction Format Settings > Response / Receipt URLs
The URL Format for both should be: https://app.uxicommerce.com/authorizenet/(STORE_ID )
The store ID can be found in two spots:
- The URL for the dashboard - https://my.uxicommerce.com/store/17319100#dashboard - In this example the store number is 17319100.
- The bottom left hand corner of the UXiCommerce Dashboard