I think this still may be open. Today (22 Oct) I tried to purchase Brukkon. The payment seemed to go through and I saw a "payment authorised" message. But then as it left the payment system and seemed to return to the software center, I got the following error message "Failure in purchase process. Unable to create a Launchpad subscription. HTTP 401: unauthorised".
I haven't tried to repurchase in case you want me to do something to help debug.
I think this still may be open. Today (22 Oct) I tried to purchase Brukkon. The payment seemed to go through and I saw a "payment authorised" message. But then as it left the payment system and seemed to return to the software center, I got the following error message "Failure in purchase process. Unable to create a Launchpad subscription. HTTP 401: unauthorised".
I haven't tried to repurchase in case you want me to do something to help debug.