I just submitted my TMDSAS application and noticed that I copy-pasted the optional essay I had written in notepad into the boxes for BOTH the characteristics/education essay and also for the unique experience essay. I had written three separate essays, but submitted two. My PS was fine. I cannot fix this online, as TMDSAS explicitly says on site that I can't.
However, my application definitely won't be transmitted when I call them first thing in the morning tomorrow. What do you think the odds are that I could convince them to open up my application, or at least allow me to cancel it and resubmit a new application with the correct info??
I know this was completely my mistake, and believe me, I've beaten myself up to an appropriate extent for this.