If the new update is not available to you after the game redirects you to the App Store, worry not. Just follow these instructions and you should be able to update:
- Open the App Store.
- Tap your profile icon at the top of the screen.
- Scroll to see pending updates and release notes. Tap Update next to the Stranger Things: Puzzle Tales app.
If the update is still not showing for you, then it's because the update is on its way to the App Store in your region. Once Apple has pushed the update to your App Store then you will be able to download and install it. Sometimes this process can take a couple of hours.