Hello everyone: I used corebluetooth, but currently I cannot connect Airpods headphones. details as following: Unable to scan to unconnected devices. If the device is already linked, it can be searched, but the connection cannot be made successfully. I searched Google for related posts but couldn't find a website that can solve the problem. I need to ask if there are any relevant restrictions on Airpods or if there are other real solutions that I can link to. thank you all.