Hi
Welcome to Microsoft community.
The Phone Link (also known as "Your Phone") app in Windows 10 syncs your phone's text messages with your PC. However, this app has some limitations. It only shows a certain number of recent messages. If you're only seeing messages from the last month, it's likely due to this limitation.
The Phone Link app should work with any standard messaging app on your phone, but there might be compatibility issues with certain third-party apps. If you're using a third-party messaging app and experiencing issues, you might want to try switching to the default messaging app on your phone to see if that fixes the problem.
Here are a few troubleshooting tips:
- Update Your Phone App: Make sure both your Phone Link app and your phone's messaging app are up-to-date.
- Check Sync Settings: Ensure that your Phone Link app is set to sync messages. You can check this by going to Settings > Messages in the Phone Link app.
- Restart Your Phone and PC: Sometimes, a simple restart can solve syncing issues.
- Re-link Your Phone: If none of the above work, try unlinking and then re-linking your phone to the Phone Link app.
The Phone Link app doesn't show messages that were on your phone prior to linking it with the app. It only syncs messages received after the phone and PC were linked. So, if you're looking for older messages, you might need to check your phone directly.
Best regards
Derrick Qian | Microsoft Community Support Specialist