Can't send support ticket

When I visit https://support.riotgames.com/hc/en-us/requests/new and try to send a support ticket it won't let me. I've logged in and selected a category but it prompts me to log in anyway. I can't send a ticket without being logged in, yet I am already logged in. And yes I have re-logged, re-launched chrome and cleared browser cookies and cache. The ticket I want to send is quite important so help would be nice.

Thanks.