I am a new user and having a very hard time integrating my CS-Cart Multi-Vendor Marketplace with ShipStation.
Every time we test the connect to CS Cart we get an error message "Invalid XML. Error: 'Data at the root level is invalid. Line 1, position 1.' We received: 'Access denied - Wrong username or password".
In addition in CS Cart there is no "Shipped" status to select - making me wonder if this version is up to date?
I am desperately trying to get this fixed and would love some help.