I just bought the new FK irons flux max and I’m having difficulty knowing whether it’s charging or not, I left it for two hours and the battery life didn’t go up- however nothing shows on the screen to indicate that it’s charging? Should something show here? Has anyone had a similar problem and knows the solution? As stated before, the battery life didn’t go up when I left it to charge, but being new to this machine I don’t know whether I’m missing something or not. Thanks!