Trunk lid closes but does not open with the button (CX-9 2011)...Help

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Mazda CX-9 2011
Hello to all Mazda enthusiasts. I'm new so please be understanding.
I also have a problem with the flap but not a bit and I have not found an answer to my problem.
Maybe someone can help me
The hatch was dismantled, the handle removed and treated with vinegar and baking soda to get rid of the rust that was blocking the spring in the handle. Now it started to reflect correctly again, so it should work properly with the microswitch.
But not.
The opening and closing with the remote control works, so the actuators are operational.
The traditional handle opening also works.
The problem, however, is with the opening from the button under the steering wheel.
After pressing it, you can hear the bolt as it releases, but the hatch does not go up, so after a while it locks again.
Oddly enough, closing with the same button works.
I thought that the same microswitch that is at the handle is responsible for opening and closing, but why don't I want to open it, but it can close it.
Where to look?
 
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