@knewe Thanks, I got your video.
After you have pressed Save & disconnect, and the configuration has been saved successfully, the button is now ready to be used as a keyboard on any Bluetooth compatible device such as a PC, tablet or phone. To use it as such a device, you must manually go into your system's Bluetooth settings and add it as such a device, even if you want to use the Flic button on the same device (i.e. the one that has the Flic app).
Note that after you have pressed Save & disconnect and have been taken back to the home screen of the app, you must NOT press the icon representing the button again, since that will reconnect the Flic button to the Flic app and hence change the mode of the Flic button from a keyboard to a normal Flic button. You should only do this when you for some reason want to reconfigure the Flic button again.