Why is it so hard for me to put weight on my front foot?

Just took a short 2 day trip with my dad to test out my first own snowboard (i have used rentals the previous 5 times i was out) and im suprised how its so hard for me to get weight on the front foot, im worried my bindings might be a bit too far back, also idk about my bindings, it doesnt really make sense but i changed from +18,+3 to +9 and +3, it kinda helped with the generel control of the board, but that might just be because i also put my stance a bit closer. Before this trip i didnt struggle putting weight on my front foot, my focus this trip was especially on learning to properly carve. The board is a salomon super 8 24 and im 5’9 size 41,5 and like 125 pounds/60 kilos. Thanks