Problem for register button

Hello,

I have to buy the activation key for the version CCleaner Pro ( Wndows 10). But, I can not access for insert the key, the button "Register" does not react.

It's a bug?

Many thanks for your help!

Best regards,

Ludo

@windowsswiss: Does anything in the registration trouble-shooting guide here help you? How to register and activate CCleaner Professional – Piriform Support