From 2D to Third Person.

Hi, i have a big or small problem, idk atm. So i started making a 2d game, but realized i wanna make a 3d game third person, a little late. My problem now is, that i managed to change everything from my char_bp to 3d, the only Problem is, when i uncheck yaw rotation, i can move my character in every direction, like the 3d template, but my character wont face the camera direction, he still faces right, when i activate yawinput, my character always faces the cameraview, but walks stiff right and left., i copied most of my code over, and on the third person template it works fine, but it would take days to convert everything, i bet there is one little checkbox that would solve my problem i am sure, i am just not experienced enough. so please help.