It's because they use JavaScript. Even if you visit the clearnet link and disable JavaScript from your browser settings, you will get a blank page (Your Tor settings are probably set to disable JS).
So that means they are going against their own reccomendations on their "Step-by-step guide on how to mix your coins" article?
Quote
Assuming these coins are going to be sent to a darknet market… if you don’t already have your deposit address, sign in and get it while having JavaScript disabled. Never use any market that requires you to enable JS!
Well you are right I just disabled the JS on chrome and the site is just showing me the blank page.
