Took me a while to suss out, but the reason my StoreKit was not updatingTransactions and restoring the purchase was because of a broken Configuration setting in my app's Scheme. When I set that to None, it worked!
In Xcode I went into Edit>Scheme (image1) clicked on the Run>Options tab and selected None for StoreKit Configuration (image2). I also went on my physical device, and logged out of my personal Apple purchase account (Settings >Your Name/Pic at the Top > Media & Purchases > Sign Out) (image3). And finally, this step might not be critical, but I logged into my test sandbox account on my device at the bottom of the Settings>App Store menu(image4 and image5). That is an account that I setup in developer.apple.com under test users.
davestrand242
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