I have scheduled AZ-900 on for 26 September 2021 8.30:00 PM MST IT through Pearson Vue and waited more than 2 hour for the proctor to show up . The page says "Thanks for your patience! We're experiencing longer than normal wait times and apologize for the delay. A proctor will be with you shortly." and "We're sorry your exam has not launched. Click for help or to reschedule." I tried to connect with helpdesk chat to reschedule my exam but did not received any reply for almost an hour.