If destination exists but destination.location is nil, Shopify has snapshot data for the destination but the live Location is deleted or inaccessible to your app.
“inaccessible” sounds like the underlying issue. How would we make it accessible to our app?
How to do this?
We already have enough issues with what Shopify is doing with reviews (some —but not all— of this can be seen here) so, unfortunately, we cannot say to app users: we think Shopify is not working correct or, maybe it is working correctly but our app is not, so please give us access so we can investigate