We have been using ShipStation and Acumatica for 4 years, and have not run into this problem. To my knowledge, no settings or configurations have been changed. But over the last several weeks, the integration seems to have degraded. We can export shipments fine, and maybe 1 out 15 shipments gets confirmed. The vast majority, however, remain open. When the issue first started, the tracking # and freight costs were still importing. I was able to build a filter based on these parameters and my warehouse was able to manually confirm the ones that had shipping info. On the ShipStation Log Details screen, most are in error.
I have searched this Community and others like it and the ShipStation Community and have been able to find anyone else with this specific issue. Any help or guidance would be greatly appreciated.