750vgzk2FKbMbqUEwmTKmuTApLUZY is the order_id. You can retrieve it using the RetrieveOrder endpoint; the other is a visible number on the Seller Dashboard that is auto-assigned by Weebly. I’m not sure what you mean by not useful; it’s simply the id that is assigned on the backend used for finding the order.
Got it, thanks for clarifying. Since they’re being created by Weebly (and not by your application), then you’re correct: there’s no way to get the full delivery details, I just wasn’t clear where the orders were being created from. This is the feature request that the team is working on but I do not have an ETA on when it will be available unfortunately.