Anyone know how to solve this since Razer can’t seem to?

I’ve been struggling to return a headset that went bad after a few months since November. The support team’s email have been nearly all generic copy paste emails. Until recently when they suggested clearing cookies, browsing history, different browsers, etc. I've tried Chrome, Edge, Firefox, and incognito in each to try and open their link. This error comes up every time. 

Anyone have a suggestion outside the box?