Welcome to the club.
While millions of people are enjoying the limited-time "fun holiday event" in Animal Crossing: Pocket Camp, I can't even load the app -- because the Apple App Store doesn't give me the option to download the mandatory 1.0.2 update.
In fact, the App Store didn't even give me the option to download the 1.0.1 update that was released 5 days ago, which implemented bug fixes.
Using my Cellular Data and force resetting my iPhone didn't fix that issue... because I suspect my account is at the bottom of Apple's synchronizing priority list.