@imjuliewaters Okay, please go into Documents and make sure there is NOT an Electronic Arts folder inside. If there is, move or rename it. Then use this command:
MKLINK /J “C:\Users\water\Documents\Electronic Arts” “D:\Electronic Arts”
This will create a symlink pointing the Electronic Arts folder to D, where it currently should be. If the command doesn't work, open D, find the Electronic Arts folder, right-click it, select Properties > General, and you'll see its Location. That should be the second part of the command, e.g. if the file path is D:\Games\Electronic Arts, you'd use this:
MKLINK /J “C:\Users\water\Documents\Electronic Arts” “D:\Games\Electronic Arts”
If you'd really rather only use a symlink for the Sims 4 folder, this is the command:
MKLINK /J “C:\Users\water\Documents\Electronic Arts\The Sims 4” “D:\Electronic Arts\The Sims 4”
Here, make sure there's currently an Electronic Arts folder inside Documents, but that there is NOT a Sims 4 folder inside that. And here again, if the command doesn't work, make sure you have the proper path to the Sims 4 folder on D.
Either approach is valid, so pick the one you like. I prefer the first because it makes troubleshooting a bit simpler down the line, just one less step at each turn. But it's not a big deal either way.