Hi there! I understand that you're having trouble with the MyRadar Weather Radar app on your Windows 10 device. Let’s see what we can do to resolve this issue together.

First, could you tell me what exactly is happening when you try to open the MyRadar app? For example, does it not load at all, or does it crash after you start it? Any specific error messages you see would also be helpful!

In the meantime, here are a few steps we can start with:

1. Restart Your Computer: This can sometimes fix temporary glitches.

2. Repair the App:
- Open the Settings app on your computer.
- Go to Apps and then Apps & Features.
- Find MyRadar Weather Radar in the list and select it.
- Click on Advanced Options, and then click the Repair option. This will try to fix any issues with the app without losing any of your data.

3. Reinstall the App:
- If the repair doesn't help, consider uninstalling and then reinstalling the app. You can do this in the same Apps & Features section by selecting the app and clicking Uninstall. After it's removed, head to the Microsoft Store to download it again.

Let me know about the situation, and we can further explore any additional steps if needed!