I did get the note eventually but until I tabbed out and back in again, I couldn't put the code in, I tried pressing E on the safe, I tried typing the numbers in manually, I tried facing each number and pressing E and nothing was working.
Knowing the right order didn't help me though when I missed the jump more than 50% of the time, too far, or not enough, at least 3 times I didn't even make it on to the first platform. I was actually considering if I could just gravestone hop it all the way, I had so many graves down there I stopped dying when I fell off because I'd land on a grave but they were too low to get back up.