Here’s an update. I suspect the train set that I got from Facebook was defective in a few ways. The seller was a bit deceitful in his representation of the item. The Bluetooth never worked, the tanker was missing and although he claimed it was factory sealed, I think all he did was get a sticky tag and apply it to the box.
i just got the Lionchief Keystone Special. That was sealed inside a plastic bag unlike the one I got from the Facebook seller. The engine chirped right away and it was recognized by the app.
Big lesson learned!