To the OP good luck. I really hope when you get the notice in the mail, it is only something that can be easily fixed. I did my biometrics a few days after you, so I could very well be in the same position as you in a few days. I hope not, but one never knows! Stay positive and don't worry now. It wont do you any good. Only worry once you receive the specific reason why you are required to turn in more evidence and it is something that you cannot fix, which I doubt you won't be able to do.

Someone posted about an individual on another forum that was applying for a work permit, not related to DACA, and he was asked for more information. Don't worry, it seems these things happen. At least you didn't get DENIED, and there is STILL something you can do to complete the process. Hang in there and let us know about your status as you receive more information. Good luck and stay positive!