Can't register CCleaner Pro

I just purchased CCleaner Professional and I can't get it registered. I can't right-click on the icon because there is no icon. If I try to bring up CCleaner, the old version is all that is there and it asks if I want to upgrade; which I already did. What do I do next?

See if anything here helps

https://www.ccleaner.com/support/ccleaner#204043844

or here

https://forum.piriform.com/topic/5739-solution-when-ccleaner-wont-install-or-download-windows/