CCleaner for Mac 1.18.30 won't start cleaner proccess, stuck at 0%. Antivirus Cylance safe list file edited and CCleaner file com.piriform.ccleaner.CCleanerAgent added to the safe list.
Have you looked into the topic that was filed shortly before this one:
We've also had some users reporting that simply allowing the software some time to run in this state will allow it to finish - this is one of the things that we're looking into ahead of the CCleaner for Mac 2.0 project.
I also see that this is the Professional version of the software; please feel free to get in touch with our support team by emailing support@ccleaner.com to inquire further about this matter.