nukecad, thank you very much!
Because I bought CCleaner Professional I just need to click on right bottom corner where there is a link called Check for updates (please see the new screenshot I've taken and attached below).
And right after that a window appears and it downloads and installs the new version on my laptop. Could you get it?
But yesterday my anti-virus used to "cancel" that downloading process, you know? It used to show me a notification (a file deleted), because it used to identify a dangerous file, you know?
However in today morning I tried once more... and then... finally, my anti-virus allowed to download and install.
Thank you so much, guys!
Now everything is OK.