Should not be able to press "buy" for an album when not logged in and email fields are blank

[CPacaud123]

As discussed here:
#813 (comment)

@CPacaud123 hmm, this feels like it's a different issue. 2 or the 3 albums by this artist didn't have product keys associated with them (though the one you link above did) which means that those two hadn't been purchased before.

I think what's happening to you (and I managed to replicate it) is that you're not logged in and the e-mail field was left blank. The bug here is that you shouldn't be able to press purchase in that instance, but it's a different bug. Would you mind creating a new issue for it just so that we can track it differently? Should be a relatively easy fix.