I was gonna say can you double check you're logged in but looks like you are.. can you please create a support ticket so our support team can have a closer look? That's the best thing to do for this kind of technical issues :)
by the way! This Intro to Process Mining course is aiming uni students :) if you're looking to get started with Celonis, I'd rather recommend you to take The Celonis Kickstarter. For further recommendations, our role pages would be your best next step. Cheers!