Hi there! I'm here to help you get back into your Loyverse account. It sounds like you're experiencing some syncing issues with the server. Let’s work through a few steps to troubleshoot this.

1. Check Your Internet Connection: Make sure your device is connected to a stable internet connection. Sometimes weak connections can cause login issues.

2. Log Out and Restart: Try logging out of your Loyverse account if possible. After that, restart your computer to refresh the network connections.

3. Clear Cache and Cookies: Since you're using a WebKit browser on Windows, clearing your browser's cache and cookies could help as well. You can usually find this in your browser settings under Privacy or History.

4. Reinstall the App: If you're still encountering issues, consider uninstalling the Loyverse POS app, then reinstalling it. This can remove any corrupted files that may be causing problems.

5. Check Server Status: On rare occasions, server issues can cause login errors. You might want to check the official Loyverse channels or their support page to see if there have been any reported outages.

If these steps don't resolve the issue, please let me know! We can look into some advanced options. Are you satisfied with the solution I provided so far?