Steps 9 and 10 contain errors that will lead to broken parts of the robot.

The upper arms (thin) must be pry off on both sides with metal spudgers. Then remove the white axis that connects them (what is called a spring here).

And then you need to manually rotate the lower arms to the upper position (while slightly pulling them) until the latches are aligned with the corresponding slots in the case and the arms separate from the body. No force required.

If you remove them with metal spudgers, you will leave marks on the case and break one or more of the latches.

Steps 9 and 10 contain errors that will lead to broken parts of the robot.

The upper arms (thin) must be pry off on both sides with metal spudgers. Then remove the white axis that connects them (what is called a spring here).

And then you need to manually rotate the lower arms to the upper position (while slightly pulling them) until the latches are aligned with the corresponding slots in the case and the arms separate from the body. No force required.

If you remove them with metal spudgers, you will leave marks on the case and break one or more of the latches.