I After using CCleaner Pro for a long time, I was ultimately very disappointed.
CCleaner irreparably damaged the Wi-Fi chip (RZ 616) on both my desktop computer and my laptop. Internet connection is only possible via cable. I tried older drivers without success. After the release of version 7, I hoped this would fix things. Unfortunately... the installer wouldn't even open...
I contacted the helpdesk via chat. They remotely controlled my PC but couldn't solve the problem. They said they would contact me with a "senior" technician. Unfortunately, I haven't heard anything since. Now I'm stuck with a subscription I can't use...