I'm not sure it's a App Store problem. I get error messages in Core Tunnel.
Already deleted it completely and reinstalled. No use as I get the same message again and again, followed by:
"The operation could be completed (SwiftyStoreKit.ReceiptError error 1.)"
Weird enough… sorry for the problem I will send you a redeem code for 1-year premium license, let’s wait for more similar cases to find out the common elements.
Thanks for considering
I just did a quick test, and seemed works. According to my own experiences, Mac App Store is not that reliable as supposed to, sometimes I need to restart computer to finished the purchase.
I did some search on such problem, and find no relate results. But I took a look at Apple’s developer dashboard, and it shows some successful lifetime license payments.
So I guess it’s very likely a glitch of Mac App Store, did you have tried contact Apple for support?