Hi there! I'm here to help you with the frozen screen issue on the Vita Mahjong ad. Let's get this sorted out together.

Could you let me know more about the situation? For example, are you experiencing this frozen screen when you first open the game, or does it happen while you’re trying to interact with the ad itself? This will help me narrow down the possible solutions for you.

In the meantime, I can suggest a few steps that might help refresh the game:

1. Force Close the App:
- Double-click the Home button or swipe up from the bottom of the screen (if your device doesn't have a Home button) to see all open apps.
- Find the Vita Mahjong app and swipe it up or off the screen to close it completely.
- Open the app again to see if the issue persists.

2. Restart Your iPhone:
- Press and hold the power button (and either volume button, for some iPhone models) until you see the slider.
- Slide to power off your iPhone, wait a moment, then turn it back on.

3. Check for App Updates:
- Go to the App Store, tap on your profile picture in the upper right corner, and scroll down to see if any updates are available for Vita Mahjong. If there's an update, install it.

If none of these steps resolve the issue, please let me know, and we can explore further solutions!