why wont my registary code work i

i am allowed to logint cccleaner everything works ok till i get to entering my security code which is ok as far as i know once enterey and i click registar it tells me its invalid mick

moved to ccleaner help board

Are you typing the key or copy pasting from the email you recieved. Just to be sure, you got ccleaner from this site, yes/no?

Also have a read here

https://support.piriform.com/hc/en-us/articles/204043844--Problems-activating-or-registering-CCleaner-Professional