my computer was wiped if i download Adobe cc do i have to pay again

You can install the apps available in Creative Cloud on your primarycomputer and one backup computer, as long as they are not running at the same time. You will have access to both the Mac OS and Windows versions, so if you have a Mac at home and a PC at work, for example, you can install your applications on both.

You can refer "Activation limit reached" or "Sign-in failed error" with Adobe apps

Thanks