Has a bug report been submitted for either case? If not, I'd suggest doing so - using the Apple Developer Bug Report web page
http://bugreport.apple.com
When creating the bug report, please select "other" for the component. I would also include a console log trace with the StoreKit profile active, showing the attempt to call restoreCompletedTransactions. The instructions to install the profile and to capture the trace follows.
Here are the instructions to install the StoreKit profile
Install StoreKit profile to an iOS 11+ device
Please login to the Apple Developer Bug Report - Profiles and Logs website using Safari (or other Browser) on the device.
<https://developer.apple.com/bug-reporting/profiles-and-logs/>
Click the “Profile” URL associated with the “App Store/iTunes Store for iOS” item. You will download the “itmsdebugging.mobileconfig” file.
IMPORTANT - PLEASE RESTART THE DEVICE
CAPTURE THE DEVICE CONSOLE LOG - connect the device to a macOS X Sierra system (macOS X 10.12.x or newer)
1. Launch the Console app and select the device in the left side of the Console window
2. Before starting the iOS app, click “Clear”.
3. Start the application and perform the steps to replicate the problem.
4. When the issue occurs, save the contents of the Console log
Check the contents of the console log for the string “fetchSoftwareAddOns”. If this string is not present in the log, the profile was not active. Please re-install the StoreKit profile and make sure to restart the device.
To submit a bug report for investigation by iTunesConnect, please use the Apple Developer Bug Report web page - http://bugreport.apple.com.
After logging in, select the Product “Other”.
Fill out the bug report form. In the description section -
make sure to include the application ID
add the in app purchase identifiers which are failing
Please include the console log contents
By following these instructions, the Bug Report team will be able to expedite the assignment of the bug report to the iTunesConnect Support team.
rich kubota rkubota@apple.com