cubase 9 pro does not see m-audio

hello , does anyone know how to load midi sport m-audio so cubase 9 pro can see it. I recently upgraded from cubase 5 and ever since then my daw cannot load my external instruments. My PC says that the devices are working .
question : does 64 bit have something to do with it? appreciate any suggestions

Hi,

Make sure, there is 64-bit M-Audio driver available and installed on your computer, please.