There is a metal guide that is part of the eject area which is designed to angle the ball into the shooter lane. Over time, this can get bent upward and cause the problem you’re seeing.
It’s extremely likely that you can fix this issue by just bending the metal guide back down (towards you, the player). You can just use your hand, no tool needed. This helps angle the ball over and down towards the shooter rod.
Sorry, I tried to explain that without a pic. Did that help?