Hey all! We found a technical issue with the watch mission that was causing the problem and have made some corrections to resolve it. As for the comment that this always happens on day one, all I can say is that I'm sorry on behalf of the team who puts this together and I hope you all know we're working as hard as we can to get everything in good order ASAP.
We're running some scripts to make sure everyone gets credit for what they already watched, and that's rolling as we speak. If you still don't see mission progression by the time you tune in to watch day 2, reach out to Player Support and they can help get you caught up.