Troubleshoot your network
Why isn’t my Bluetooth connection working?
If you’re having problems connecting your Mac to a Bluetooth keyboard, mouse, speakers or some other peripheral, first check Bluetooth is enabled on both devices, then go to System Preferences > Bluetooth to pair them again. To do that, delete the device’s existing pairing from the list of devices (if it’s there), then switch both your Mac and the device into pairing mode (you may need to read the device manufacturer’s instructions for how to do this). When the device reappears in the list, click Pair next to it. It should then connect successfully. To do this on an iOS device or Apple Watch, go to Settings > Bluetooth. The process is then the same as on the Mac.