Unable to Submit the Second (2nd) Portion of the MIT App

Evening,

I was able to successfully complete part 1 and pay for the application, but I get an error page every time I try and submit the 2nd part. I know I shouldn’t have waited until so close to the deadline, and I emailed admissions and they say I will have until tomorrow but I still don’t know what’s causing the issue. I’ve restarted and used a different browser and computer. Took out long dashes. Re-saved everything too.
Any ideas?

Thanks…