When our eBay cart tries to do an update we get some orders, while others do not import and no matter what we see this error,
An error occurred attempting to update orders: Value cannot be null. Parameter name: key
This has been going on for several weeks and causing us extra work.
Hi @Adam_Wall ,
Welcome to the Community, we are happy to have you here.
II was able to look into this and I can see that this error is something that we are aware of and our senior support team is working on a fix. I do not have an ETA on resolution, but the moment there is an update I will post it to this thread.
-Erin: Your Friendly ShipStation Community Manager