For most of a week now, the login for the support pages has been a loop. Click Support, prompted to log in, do so, get routed to the home page for forza motorsports but not logged in, click support, repeat ad nauseum.
For 5 days this has been going on. Multiple devices, cleared history and cache, multiple networks, nothing has cleared it up. Which leaves the problem squarely at your feet. I’d put this topic in the support section of the forums, except that is nothing but a link to the FAQ and the support ticket system. So here is where I have to put this.