I just purchased this game, and Hack R in the bundle. I cannot download them it says this. "Nothing is available for download yet." Chaos Lab, and A Western Ballad worked fine though.
I tried using a VPN in different countries, and also tried a different browser. I never had this issue before, but I googled it. This has happened before, but I am not sure what causes it. From your own account there may not appear to be a problem. I suggest taking a look at it signed out, or something. I received your e-mail.