Help needed uninstalling firewall

Running windows 10. Had the free firewall. It started blocking Accuweather saying it contained unauthorized content. Tried uninstalling comodo via control panel/uninstall. Web page opened saying uninstall successful. Still blocked accuweather. Did a computer search for comodo and ran all references through a file shredder. It is still blocking accuweather. Downloaded Revo ran forced uninstall, typed comodo in the name box and deleted the 4 references that it found. It is still blocking accuweather. How do I get this program to stop?