I got a reply from Larian again.

They said their department was only just made aware of this forum thread and they are spreading it internally so everyone knows how we are feeling about this. They are going to get an formal statement posted here as soon as they can (the guy replying to me isn't even part of customer support, he is just pitching in to try and fight the fires).

I'm pretty fustrated over it all (having to make 3 friends wait for me before they can start playing, while other groups of friends are now in Act 2 and chatting about what is happening) but I don't really see what else Larian can do, short of giving out more digitial keys to everyone, but that sounds like a logistical nightmare when Happyshops aren't even tracking orders correctly (and I'm sure the finance department wouldn't like ~5k extra copies of the game flying around).