Anyone had an issue with Magic Wireless keyboard paring? The Mac identifies the keyboard but it doesn't the numeric passcode when typed. Would that mean the keyboard is not typing correctly? I attempted quite a few times and there had been several different numbers. None worked. Is there a possibility to choose to type letters instead of numbers, just in case the numbers are not typing correctly? It's an old keyboard and had not been used for years but the battery is working and it does switch on. However caps key doesn't light up with green light when pressed. Any suggestions?