Hi, Bernard.
It appears that the names you've given your Bluetooth devices aren't appearing in the list when you select a device to use. I'm happy to help.
Change the name of a Bluetooth device -- See if changing the name of the device resolves the issue.
- From the Apple () menu, choose System Preferences.
- Click the Bluetooth preference icon.
- Control-click or right-click on the device's name to see a shortcut menu.
- Click Rename in the shortcut menu, then type a new name for the device.
- Click the Rename button to save your changes.
The custom name that you give your device now appears in the Bluetooth menu of your Mac and in the Bluetooth section of System Preferences.
When you rename an Apple wireless device, it remembers the new name. So if you pair the device with a different Mac, the device will appear as you named it. But with third-party devices, the custom name is often stored on the computer. Because of this, the device might return to its default name if you pair it with a different Mac.
How to turn on or turn off your Mac -- If the issue persists, restart your MacBook Pro, then test the issue.
Use safe mode to isolate issues with your Mac -- Test how it responds in safe mode. If there are no issues, reboot normally and test again in your own user account. Remember this when booting in safe mode: Limited graphics performance in OS X recovery or safe mode
How to test an issue in another user account on your Mac -- If the issue is also happening in safe mode, use this article to create and test another user account. This will demonstrate if the issue is isolated to your account, or if it's system wide.
Let me know how that goes.
Take care!
