I wasn’t using the keyboard for a week and after that when switching to BT mode the keyboard just switches off. When trying to do hard reset (esc + caps lock + space and connect USB cable) after removing USB cable, still being in BT mode, the power light is on for ~3 seconds and then switches off again. I tried holding down the bluetooth profile buttons to get it into pairing mode but that seems to activate demo mode again (keyboard flashing rainbow). Does anyone have a solution for this?