Find F-Secure Freedome, and click Download for Mac
Finalize the installation of the program from there
When F-Secure Freedome is installed, click on the Subscription tab from the menu list on the left pane
Depending on your activation method:
Click Have a code? to activate using a subscription code, and enter your code; OR
Click Log in if you have a subscription with F-Secure Total or other providers, and sign in with your credentials
If reinstallation does not fix the issue or only temporarily fixes the issue:
If you have MacKeeper anti-virus software installed on your system, its Memory Cleaner feature can cause issues with Freedome. Disable or remove MacKeeper to make sure it is not the cause for the connection issue.