I paid it by card and they sent me this how to activate it ccleaner for android ID { number removed for users security}
You should never put any identifying information, licence keys, etc. in plain views where it could be stolen.
I have removed it from public view.
(I have also removed your other post which was the same as this but not in English).
Do not post it again, but there were the wrong number of characters in the key that you posted.
It will not register in that form.
Was that an error? Or is that how it was sent to your?
Where did you purchase CCleaner for Android from?
This tells you how to register a valid licence key in CCleaner for Android:
https://support.ccleaner.com/s/article/how-to-register-and-activate-ccleaner-professional?language=en_US
But that will not work for the key as you posted it, because it is the wrong length.