It's inside. Force jump up the middle where the lift isn't working. As you may have already found out, you can register the secret area from on top of the assault lander on the outside, but not grab the stuff.
If you are pressing and holding the jump button/key down in the elevator shaft in the center of the pod, and aren't making it to the top I don't know what to tell you. It's not that tough a jump. How close do you get to the second floor?