Hi there! Sorry to hear that your Pacer app quit operating. To better assist you, could you please tell me a bit more? For example, are you seeing any error messages, or does the app just close suddenly? Also, are you using the app on your Windows device through a browser or some other way?

Meanwhile, here’s a general step-by-step guide to troubleshoot the Pacer app not working on a Windows device via WebKit browser:

1. Refresh the browser page or close and reopen the browser to restart the app session.
2. Clear your browser cache and cookies to remove any corrupted temporary data that might interfere with the app.
3. Check that your browser and Windows OS are up-to-date, as outdated versions can cause compatibility issues.
4. Ensure you have a stable internet connection; Pacer relies on connectivity to sync your data.
5. Try using the app in a different browser (like Chrome or Edge) to see if the issue persists.
6. Disable any browser extensions or ad blockers temporarily, as they could block essential app functions.
7. If the app requires permissions (like location access for step tracking), make sure those are enabled in your browser settings.

If you’ve tried these or have more details, please let me know! We can dig deeper or explore account settings or app-specific fixes next.

Are you satisfied with this initial guidance?