People are simply trying to help by suggesting options. Obviously the ratchet is 180d off in your vid. The ratchet cam is supposed to slide into the bracket on the return stroke to "disengage" the meshed ratchet & pinion.
First here is a shaft disassembled
Now hopefully you have the shaft "located" correctly with the stopper lug contacting the boss on the case. With the shaft in the correct orientation you can see the spring needs to be rotated 90 degrees to tension before attaching in the right spot on the case.
Now see the ratchet cam rotated into the "u" shape of the bracket disengaging ratchet & pinion.
This shows the cam just before it runs into the bracket but while the two are still meshed.
Remember you want the ratchet & pinion engaged when you kick (rotate) the shaft down, but on the "return" stroke when the main spring is returning the shaft the ratchet cam enters the bracket "U" disengaging the ratchet from the pinion. No offense here Alek the design works....but you keep showing us how it will not the way you have it assembled. Try something different.