The general website works but the one to file a complaint does not. The general website has a form for feedback but that doesn’t work either...
Sorry about that, all I can do is get you to it. Did you try turning off any script/ad blockers? Government sites are bad that way. They make links dead until you allow them to be completely trusted by your browser.
Or... They have purposely turned them off. But I run into that with government sites. If you want to use them you have to allow them to give you all the cookies they want to. Or some elements will work and others like buttons will not.