We have been using SuncWithConnex for the past year with some success. In October there was some changes with their service that made it worthless. Instead of automatically sending orders, we now have to keep a special tab open in our browser and manually resync with their service every 3 days. And they charge $2400 a year for this? We need invoices generated in Quickbooks Online sent automatically to Shipstation for fulfillment. Has anyone had success with doing this outside of Connex?