Don't see the game update in the Store? 

First, when a new update is available, it will be pushed to the store in a sequential manner. Depending on your device, it may take some time for the [Update] button to appear. 

If you're still not seeing the update on your Store, please check the following 

■ How to check by Store

[Google Play Store]
1) Go to Settings → Applications → Google Play Store → Storage → Clear Data, Cache
2) Go to the Google Play Store and search for Self-Service Knight : idle RPG.
3) Check for [Self-Service Knight : idle RPG] update

※Guest accounts may have their game information deleted when clearing game cache/data. Be sure to check if your account is linked! 

[App Store]
1) Enter App Store → [Update]
2) Refresh the App Store (drag the store page down)