Hi,
Are you trying to link two different Android user profiles to the same Windows 11 PC?
You can link only one phone profile to Phone Link at a time on Windows 11, and the app supports one active connection per device. If your Android phone has multiple user profiles, only the main profile signed into the Link to Windows app will sync messages, notifications, and calls. To fix this, open Phone Link on your PC, go to Settings, unlink the current device, then sign in again using the Android profile you want to sync, and make sure the same account is used in the Link to Windows app on your phone.