F-Secure safe is blocking incoming calls and messages from iPhone to Mac on face time . Remove Safe and everthing back to normal.
May I suggest that you kindly reinstall SAFE and see if that solves the issue. Sometimes, an updated version of the program is required. If you experience the same issue, ensure you have not enabled Family Rules features or any of such restrictions. Get the screenshot and the fsdiag ready so we could email you and request for it for further investigation.
Reinstalled same fault still blocks calls on Macbook running Catalina 10.15.2 . Removed ok again or install Bitdefender everthing works .