You can clear the game's cache through the following steps:

- Close the game.
- Go to your device's settings and choose all applications or (apps)
- Choose the game from the list of your applications. You will see information about the application, including storage or storage space; click on it.
 Click Clear Cache 

Note: Only follow these steps if your base is linked to one of the linking methods. Otherwise, you may risk losing it permanently and having no chance of regaining it.