I want to pair my alu wireless keyboard. When my macbook ask to type eight digits followed by enter I can only use zero and backspace. However the zero seems to count for every digit as I see the cursor going to the next digit. After eight zeros the enter key does not work. So I end with a time out and pairing failed. I tried: -holding the keyboard's power button while pairing. -restarting with cmd-alt-P-R -other ways of pairing (0000 or no digits at all) I also tried to pair with a 2011 Macbook Air with the same behavior. So I think the problem is in the keyboard. But how to solve it?