I have the same Problem and several Friends of mine (Switzerland)
Bought the game yesterday, and we cant play it, the whole weekend now. We set aside this WE just for this game, paid for it, and its not working. This is very upsetting. And no Information on if even someone is working on this. This is not a finished game, if you cant even start it. Very sad to see this from Larian. Thought you guys are different.