Has anyone solved the problem? I haven't been able to test my app for almost a month now.

I'm still facing the same issue: ReceiptRefreshRequest: 0x139e67d50: Error fetching receipt for com.XXXX.XXXX - Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo={_kCFStreamErrorDomainKey=4, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask 50AAA25A-6DD8-473F-99F5-B83EE2B37E65.75, _NSURLErrorRelatedURLSessionTaskErrorKey=( "LocalDataTask 50AAA25A-6DD8-473F-99F5-B83EE2B37E65.75" ), NSLocalizedDescription=The request timed out., NSErrorFailingURLStringKey=https://p100-sandbox.itunes.apple.com/WebObjects/MZFinance.woa/wa/createAppReceipt, NSErrorFailingURLKey=https://p100-sandbox.itunes.apple.com/WebObjects/MZFinance.woa/wa/createAppReceipt, _kCFStreamErrorCodeKey=-2102}

Still experiencing the same issue, Xcode 12.4, Big Sur 11.2. No xcode receipt, no restoring purchases.