Hi there! I'm Benjamin Carter, and I'm here to help you with the crashing issue you're experiencing in the PDF Reader and Editor | Xodo. Losing unsaved annotations can definitely be a concern, so let’s work through this together.

To understand your situation better, could you tell me if the crashes happen consistently under certain conditions—like when you're performing specific actions, or does it seem random? Also, could you let me know if you've tried any troubleshooting steps so far?

In the meantime, here are a few common steps you can try to resolve crashing issues in Xodo on your Windows device:

1. Update Xodo: Ensure you have the latest version of Xodo installed. Sometimes, bugs are fixed in newer releases, which can help with stability.

2. Clear Cache: If Xodo has accumulated a lot of data or temporary files, clearing the cache might help. To do this, go to the settings in the application and look for an option to clear cache.

3. Reinstall Xodo: If the crashing persists, consider uninstalling and then reinstalling Xodo. This can resolve issues with corrupted files.

4. Check for Windows Updates: Make sure your Windows operating system is updated, as compatibility issues can also cause programs to crash.

5. Run Compatibility Troubleshooter: Sometimes, running the compatibility troubleshooter for Xodo can help. Right-click on the Xodo shortcut, go to 'Properties', and then the 'Compatibility' tab.

6. Disable Browser Extensions: If you're using Xodo directly in your browser, disabling any unnecessary extensions may also help with performance.

Let me know how it goes, and if there's still an issue, we can delve deeper into advanced troubleshooting or even discuss reaching out to Xodo's support. Are you satisfied with the solution I provided so far?