New laptop

I have just bought a new laptop and installed Ccleaner but it says my registration key is invalid. How do I get this to work, I have original invoice nfor when I bought Ccleaner professional. Thanks

When did you buy CCleaner Pro?

May 2017

Pro licences are for 1 year only.

Big ongoing thread about this subject

https://forum.piriform.com/topic/52694-ccleaner-pro-lifetime-licence-why-has-it-expired/