System Win10, Ver 1909 Build 18363.752. Downloaded paid version CCleaner 5.65.7632. App runs but appears to be free version, did not ask for new license key. When I attempted to enter the new key did not recognize it. The entry was cut and pasted from download verification and was correct.
Also downloaded Android same paid version, also runs but also did not ask for license key.
Cut and paste for the key is good, did you use the same name that you registered? (We've seen people try to put put a different name or even their email in there).
For Android I believe it works differently, because you buy it from the Google Store it knows that you've paid so there is no need to enter a key.
Correct, the old registration was to my first name only. It is now working.
Good to hear it was sorted so easily.