Open the CC app and see if it shows up. If not try Signing Out then back In.
You can also download the update directly but I don't have a link for it.
Have a read at this link-
and in particular look for this :
I was using CC-6.2 (subscribed) on two computers, Windows-pc desktop and Dell laptop,
I downloaded the 'patch' from this link, copied it to both computers, it updated me to 6.3 on both computers and is working great!
I did not use the Creative Cloud app to do the update.