Hi,
In addition to Ramesh suggestions, do this:
Exit the phone link app.
Press Windows+R keys on the keyboard, or Right-click Start on the Taskbar and choose Run.
Type/Copy-paste: %localappdata%\Packages\Microsoft.YourPhone_8wekyb3d8bbwe\LocalCache\Indexed\f2b7e184-237b-401c-ad71-5986fa674a28\System\Database
Press Enter.
Remove all the files from the folder that serve as a cache for Phone Link. Open Phone link again and verify.
If nothing helps, remove your Phone from the PC and vice-versa from Bluetooth and start again from scratch.
I look forward to hearing from you to get the results of the troubleshooting.