What does the physics behavior collision mask for the angled board look like? Are there any other physics objects? It looks like it’s either resting on a hidden object or the physics collision mask doesn’t match the object.
If you look closely at the ball’s beginning trajectory, you can see that it doesnt have a straight trajectory. indicating that is is goin in the right direction but it hurts an invisible wall. this also explain why some get stuck at the middle
ensure your background objects don’t have physics. ensure hitboxes are correct for the object with physics. you can select every instances placed in the scene editor with the instance tab. select them one by one to ensure all of them are intended. additionally, check your event sheet by checking all “create an object action” using search in event sentence. ensure all of them are intended