Hi, Christos
My name is Jeffrey and I am an Independent Advisor. I would be happy to help you today.
Try to run the troubleshooter for Bluetooth.
Go to Settings - Updates & Security - Troubleshoot. Click on Bluetooth under Find and fix other problems. Follow the on-screen instructions.
https://support.microsoft.com/en-ca/help/402622...
https://support.microsoft.com/en-ca/help/15290/...
Try to update the Bluetooth drivers