How do I keep my sprite centered while I move around?

So I've created a player sprite with the 8 direction and platform behavior. I also have the scroll to behavior on.

I can have my sprite's initial position at the center of the screen, but the player gets bound near the far left side of the screen after some moving around, while the camera follows.

So, just want to figure out how to have the camera follow my sprite when its positioned at the center of the screen, thanks!

Set Unbounded scrolling=Yes in layout properties.

So did try to set unbound scrolling to yes, but my screen is blank. it seems like the screen shows blank space way below the layout-when I jump, I can see the bottom of the layout pop in a bit from the top of the screen.

I'm guessing its probably a problem on my end, but I'm still trying to figure out what it is...