how many guesses do we get?
what system (i'm betting windows 10), home or office | school and is the CC app running in the background
Ussnorway is right, Please give us a little more info regarding your query!
Particularly the Operating System you are on and the version of Muse you have updated to?
Do you have any firewall on your network? also, make sure if you are logged into the Creative Cloud desktop application?