It worked. Although I had to set the movement mode to Falling instead of Flying for the player not to remain at the air. Thanks for putting me in the right direction.
I am wondering, if the walking mode keeps the player on the ground, how does the Jump function works? I haven’t been able to open it to see it. Does it use an AddForce or AddImpulse because it knows that you won’t stack these forces? Unless you could configure a double jump… I don’t know.