Cannot backup

time machine doesn’t back up my macbook air any more…!!
although I have already updated the software and restarted mycloud unit…???
thank yu for your help!

What is the behavior of Time Machine? Does it fail to backup your computer with no error messages? Is it unable to connect to your WD My Cloud? Does the backup start, but stalls and never finishes? More information will allow for more Users to better help you.