How to fix “[Reallusion Program] can’t be opened because Apple cannot check it for malicious software” error?

All our programs are certified virus free.

Since Apple has a new verification mechanism in place, then please see this thread for a workaround until a more permanent solution becomes available: –
https://support.apple.com/en-us/HT202491

More info: https://forum.reallusion.com/424795/000-IMPORTANT-NOTICE-Cartoon-Animator-for-macOS-1015-Catalina