Hi there! I understand you're having trouble with the Kardia app crashing or stopping unexpectedly on your Windows device. Let's work together to get this sorted out.

To start, could you tell me a bit more about when the app crashes? For example:
- Does it crash right after opening, or during a specific action like taking a reading?
- Have you tried restarting your PC or the app already?
- Is your Bluetooth enabled and working properly (since Kardia relies on Bluetooth to connect)?

These details will help me guide you better. Meanwhile, here are some common steps that often help resolve such problems:

1. Restart your computer to clear any temporary glitches that might affect app performance.
2. Ensure Bluetooth is enabled on your Windows 10 machine because Kardia needs this to connect to the mobile device.
3. Check Bluetooth permissions for the Kardia app:
- Go to Settings > Privacy > Bluetooth
- Make sure the Kardia app has permission to use Bluetooth.
4. Update the Kardia app: Sometimes app issues are fixed in new versions. If you haven't updated it recently, please check for updates and install the latest version.
5. Reinstall the Kardia app: Uninstall, then download and install the app again from the official source. This can fix corrupted files causing crashes.
6. Turn off Bluetooth and reboot your device, then turn Bluetooth back on: This often resets the connection and may stop the crashing issue1 3.

If after trying these steps the problem still happens, let me know the exact point when the app crashes, and if possible, any error messages you see. We can then look into more advanced troubleshooting or check for any server-side issues.

Are you satisfied with this initial guidance, or do you want to go through the steps together?