My zboard is writing z when i press the y button

Open your Ideazon program menu. There will be a virtual display of a keyboard. You can drag and drop the keys to assign them to different locations. Drag and drop the Y button to where it belongs and the Z button to where it belongs then click save. This should fix your problem :) 

reinstall your z board driver and making sure the pins on your zboard connect well with the keyset

this could very simple, all you have to do is take off the letter plate ( theres a small button underneath with you press for a letter to come up) take them off and swap them round or just stick stickers over them to make sure you know which is which, its not technical my solution but its a solution all the same, that sould help