problems opening CCleaner on Catalina

I just upgraded to Catalina and downloaded the latest version of CCleaner - and paid for it. I can drag it into Applications with no problem, but when I try to open it it comes up with this message. “CCleaner” can’t be opened because Apple cannot check it for malicious software. And I can go no further.

Any ideas out there?

Cheers

M

Also see here

https://forum.piriform.com/topic/55734-ccleaner-117-for-mac-crashed-on-macos-catalina/

As you paid you are entitled to free direct support

https://support.piriform.com/hc/en-us/requests/new