BE CAREFULL! Doesn't work on new update Mac

Be careful with updating! Manager doesn’t work with the latest macOS Catalina version.

Does someone know when the update is ready to fix it?

have you read the below topic?

This behavior has to do with macOS Catalina, not with Manager. Additional security features have been added.

Read this updated Guide to see a new note on how to get Catalina to run Manager: Install or update desktop edition on macOS | Manager.