Your code should turn up, had the same yesterday when Dredd had his code and was downloading and mine finally got emailed late last night after fretting it wouldn't turn up.
If you are on PS4 you have until Friday morning but as usual with Psn it does take a while to download the 26gb.

I honestly think some bosses are designed to be fought by a full team rather than on your own. In the Alpha I ran solo all the time, and felt a couple of bosses were definitely meant to be attacked by more than just me on my own!Hmm I did like it until I got to the bullet sponge boss guys. Now I'm not sure it kind of ruins it a bit....... Shooting hundreds of rounds into a guy before he dies does not feel right.
Edit - Still liking not really sure what is going on with the Dark Zone but it's fun...
