Registration Key Not Working on Mac

[Yllek]

Hi, I purchased an annual subscription and tried using my license key from Windows to Mac even after downloading the CCleaner Professional with no luck. Any suggestions? 

 

[Dave CCleaner]

Depends on whether this is a CCleaner Professional licence key (starts with a "C") or CCleaner Professional Plus licence key (starts with a "P").  CCleaner Professional Plus keys will work on both Windows and Mac.  CCleaner Professional keys are for Windows or Mac and one won't work on the other.  More details here https://support.piriform.com/hc/en-us/articles/204043844--Problems-activating-or-registering-CCleaner-Professional

[Yllek]

So my CCleaner Professional license key that starts with "C" will only work on Windows and I will not be able to transfer that subscription onto a Mac? Is there a way to get a new license key specifically for the Mac, since I have already paid for the annual subscription?

[Dave CCleaner]

@Yllek: CCleaner for Mac keys also start with a C.  If what you have was labelled as "CCleaner Professional for Mac" specifically on your receipt then you should be fine.  If it only says "CCleaner Professional" (without "Plus" or "Mac") then contact support (support@ccleaner.com) requesting an exchange.