I called them on Wednesday, before I had gotten in touch with my evaluator, and the woman I talked to wasn't very helpful. I mentioned that I'd heard a couple other people had evaluators who thought they had submitted, but it didn't actually go through, and she just kind of said "well, the deadline has passed, so he can't try submitting again, it's up to the schools whether or not they'll accept the letter." Maybe it's worth a shot calling again now that I know it was an issue on their end, but I don't know if there's anything they can do at this point, unless it somehow actually went through on their end (their system was down when I called, so she couldn't check). Knowing them, they'll probably say "well, that's why we say not to wait until the last minute to submit." Yeah, that's good advice, but there's no way everyone, especially evaluators, is going to follow that. There's no reason he should have had to spend 45 minutes trying to submit, even on the night of the deadline. If any of the schools aren't willing to accept the late letter, then I'll definitely give VMCAS a piece of my mind. I still haven't had a chance to call schools, I ended up not having time on Friday due to work. :/