SysTray Icon shows a problem sign

[size=10pt][size=10pt]SysTray Comodo icon has superimposed red circle wirh red bar sinister. Fire Wall main screen shows all systems active, no action required. Proactive defense detail reports 4 suspicious attempts (so far), so firewall is doing something. What means the icon decoration, how to correct?[/size][/size]

Try running Diagnostics. It is under More.

Does that help and what does it report?