For ads to be available you need a strong internet connection. Also VPNs or firewalls (ie from a work location) can prevent the connection to our ad providers.

Few things to try:

• Turn on Airplane mode and then turn it off to reset your connection
• If you are trying to watch an ad immediately after you open the game, try waiting a couple minutes - it can take time to connect to our ad provider's servers.
• Log out and then back into your Google account or Game Center account
• Ensure you have enough free space on your device - ads require downloading videos which can be large in size.
  • ANDROID: Clear the cache for the game by going to your device Settings -> Apps -> Monster Country Idle Tycoon -> Storage
  • iOS: Reinstall the app, as you will only download the currently used assets. This won't lose your game.
• ANDROID: Try moving the app from your SD card to internal device memory, or vice versa -- it should be in the storage location with the most free space.
• On a data connection and not Wi-Fi
• A different Wi-Fi network
• Lastly, hard reboot your device (fully power off and then back on again)

As a last resort, you can reset your Ad ID.

NOTE: Resetting your Ad ID multiple times runs the risk of the ad provider blocking you. Please only try this once or twice.

Reset Ad ID - Android device:

• Go to 'Settings'
• Under 'Google '
• Under Services, tap 'Ads'
• Tap 'Reset Advertising ID'
• Tap 'OK'

Reset Ad ID - iOS device:

• Settings
• Privacy
• Advertising
• Tap 'Reset Advertising Identifier'