If you're unable to update your game, here are a few possible reasons:

• The game's update may still be rolling out. To learn more about how rollouts work, please check this FAQ page.
• There may be an issue with the "update" request option that appears in the game. To fix this, please follow these steps:   

1. 1.     Close the game completely. Do not uninstall or reinstall the game.
   2.     Open the official app store for your device (Google Play Store, Apple App Store, or Amazon Appstore).
   3.     Search for "Hill Climb Racing 2" in the search field.
   4.     On the game's page, tap "Update" to install the latest version.