Do not pry clips at the front side! Just unclip back ones and lift the bottom cover like that: ∠ Otherwise you will totally break those clips and the body will never be assembled solid as there are no screw in the center.
You did the same thing as I did and broke some of those plastic thingys. Looks like the correct way to do is lift the back side of the cover and then release the front.
When you remove the WiFi-module at 9:30 there near is another module hidden under the black cover. Do you know what is this ? It missing on my laptop too