To troubleshoot the Kilonotes app crashing issue, you can follow these step-by-step solutions:

1. Force Close the App:
- Navigate to the settings of your device.
- Go to the 'Apps' section.
- Find Kilonotes in the list and select it.
- Tap on 'Force Stop' to close the app completely. Try reopening Kilonotes to see if the issue persists.

2. Clear App Cache:
- Again, go to 'Apps' in your settings.
- Select Kilonotes.
- Tap on 'Storage' and then choose 'Clear Cache.' This action can resolve issues caused by corrupted temporary files.

3. Check for App Updates:
- Open the Google Play Store on your device.
- Search for Kilonotes.
- If there’s an update available, tap 'Update' to install the latest version. Sometimes, crashes are fixed in newer updates.

4. Restart Your Device:
- Long-press the power button on your device.
- Select 'Restart' to reboot your phone. This can often resolve temporary glitches affecting app performance.

5. Free Up Storage Space:
- Check if your device storage is nearly full.
- If storage is low, delete unnecessary files or apps to free up space, which can improve overall app performance.

6. Reinstall the App:
- Go to 'Apps' in settings.
- Select Kilonotes and tap 'Uninstall.'
- After uninstalling, restart your device and then reinstall Kilonotes from the Google Play Store.

7. Check Compatibility:
- Make sure your device is compatible with the Kilonotes version you are trying to use.
- Sometimes app updates may not be compatible with older versions of Android or devices.

8. Contact Support or Check Forums:
- If the above steps do not resolve the issue, visit the Kilonotes Reddit page where other users discuss similar problems – learn more - learn more or contact Kilonotes Support for assistance.

By following these steps, you should be able to resolve the issue of Kilonotes crashing shortly after opening. If the problem persists, it might be a bug that needs addressing from the developers.