My Stadia arrived today... Yet I have no code. Contacted Google Customer support and they said it wont arrive until 3 - 5 business days after shipment so I can expect it 25/11 - 27/11! Seems wrong that I purchased something it arrived and I can't use it!
I am in the exact same situation! I literally have the Stadia controller in my hand but cannot use it . I tried to contact support but the chat does not work and they never called me back.