I'm having the same problem! I signed in yesterday twice and got nothing. Signed in today and get nothing still! It's currently 3:15pm where I am (east coast US), and normally sims drops happen at 1pm my time. I even go into build/buy and filter by the event rewards, and it says no results found. I've seen youtubers talking about getting the popup, so I don't get why we're all having so much trouble. I just hope we don't miss out on everything because I think I can speak for most, if not all of us, when I say we've invested a TON of money and time into this game. We shouldn't be cheated out of the free rewards things. Ugh. I just hope they figure it out or make an announcement or something! Even if the event isn't live yet, I don't understand why some people have it (and have screens saying they need to claim things by the 29th) and so many of us aren't getting that. I wish I could pretend to not be frustrated by this ☹️