No problems for me on iOS and Windows platforms using FireFox, Explorer, Chrome with Windows Defender, Norton, Avast, Malwarebytes, uBlock Origin and others...
I have heard this complaint from others though: any chance, since it is being named as a "blocked attack site" it could be a provider issue? SFRC hasn't been deemed a "scary pro-gun, pro-democracy, pro-rights, pro-freedoms site" by some SJW Internet provider?