I've been trying for half an hour to get the app to start to get in CBT ...but while it would open normally till about 2 hours ago ...now nothing works. Restarting PC, reinstalling it ...and rebooting it many times nothing works. So basically I can't sign up because the frigging app won't start. Good Job making thousand of people using that as the only option so it will bottleneck it as I doubt it could manage so much traffic at once.
P.S. the error i gate is (tho I'm translating it from my language so it could be a little different) Error: Failed to retrieve Insider Content.