I’ve had a Logitech Bluetooth keyboard for a few years, it got stuck paired to a device and it basically bricked it. After doing some research, I found away of wiping the keyboard’s memory, allowing the keyboard to be used again:
Unpair, delete all Bluetooth settings regarding the keyboard in Windows or Mac.
Reset the keyboard by pressing the following keys: “Escape” – “o” – “Escape” – “o”,“Escape” – “b”
If the reset is accepted, you may see a light blink depending on your Bluetooth keyboard model.
Connect your keyboard to the computer via Bluetooth and your keyboard will be ready to go!
This works with Logitech multi-connect keyboards as well.