I fixed my Bluetooth issues with my Logitech K811 keyboard on Linux Mint

Take note of your device ID in a similar format as a MAC Address.

Here are the steps I took to fix the pairing issue.

Run bluetoothctl, you will get a special prompt.

bluetoothctl

Perform a scan. Copy the device ID.

scan on

Remove the device.

remove ID

Finally reconnect device.

connect ID
trust ID
pair ID

You may be prompted to enter the pairing code.

Simply enter the numbers.

That’s it.