All Cydia Store purchases go through SaurikIT's centralized payment processing server. When the user attempts installing a store package, the repo that hosts it queries the central licensing server to see if the device is authorized before returning the package. Some packages make additional calls after the package has been installed on the device to download a license.
It is this final step that was failing intermittently on my servers due to the insane load (~300x usual sales on this package, ~125x traffic load overall). Please give it a try now, I have verified that it is up.
Thanks! Interesting. It still isn't working, after uninstalling / reinstalling in Cydia, but I guess I'll give it a day or too. Is the Authorize button in RetinaPad supposed to actually do something?
It is this final step that was failing intermittently on my servers due to the insane load (~300x usual sales on this package, ~125x traffic load overall). Please give it a try now, I have verified that it is up.