since purchasing my pro 4 I have been plagued by keyboard connection issues. I even returned my first pro 4 and got a new one. However, same problem with the second (original keyboard). I cannot work out if it is a hardware or software issue. This keyboard worked fine on another pro 4 in the shop. Sometimes restarting it helps, sometimes it doesn't. This happens every day without fail. Is there anyway to fix this ridiculous problem?