Super stressful! I had 4 devices going all starting at 7 am to 7:01 here on the West Coast. My iPad got in first after about 5 minutes, but it froze halfway through the registration and wouldn't let me tap boxes. UGH!!! Fortunately, my iPhone opened up right about the time panic ensued. I made it though and successfully registered for the half by about 7:15. My laptop and desktop were still spinning! Mobile devices definitely worked for me here, which is a bummer since I hate typing on them, and I'm much slower.