Same happened to me, there’s a small canal in the top case where the antena must be vertically inserted, if you just push it horizontally in place it will fit and you will be able to reassemble the computer, but the antenna will be sligthly bent and cause friction with the screen when opening.

CR2032 also work

I’ve seen versions of this battery board that the cable goes around and to the back of the board, so this step is not always necesary.

I’ve seen versions of this battery board that the cable goes around and to the back of the board, so this step is not always necesary.