Apple:
 
You should be able to update the game from App Store in two ways by following the steps below.
  • You can tap on the link, and then update the game after tapping on the "Update" button.
  • If you have already tapped on the link and you see an "Open" button instead of "Update," you can try the following steps;
  1. Open the App Store
  2. Tap on your profile photo at the top right side of the screen
  3. Swipe down the screen as shown in the animation
  4. Tap on the "Update" button next to Royal MatchAfter tapping the button, you will be able to update the game.

Google:

You should be able to update the game from Google Play Store by clicking the link.

Please restart your device and check again if you can't update the game with the link.