Physic function doesn't work in different resoultions

Hey everyone, I'm developing a 2D game in which the player can rise up when in a certain form, I have done this by using rigidbody.addforce . It is working fine on my computer (1920x1080 resolution) however when I built and tested the game on a laptop with a different resolution the player would not rise, it looked as if there was not enough force being applied to lift the player up. Strangely, the horizontal movement which also used rigidbody.addforce works perfectly fine on the laptop. I have been researching into this issues for ages now and if anyone has some knowledge on the area or even better a solution that would be amazing!

P.S. I also tried using transform.translate but it had the same effect :( Thanks in advance.