Hi, I have been using my perfect prep machine for ten months now, for tha first time the calc light was flashing, I have run the clean a few times with boiling water. My issue is with the calc button on the side to start the descale process, it just does nothing as far as I can tell, should it make a noise or anything to indicate it’s de scaling? I have tried the gold for two seconds, just pressing it, holding for five seconds...nada... any advise if anyone has had this, calc light has been flashing the whole time, thank you. ☺️