City Builder Help Needed, Cannot move items past certain point

I am following a youtube tutorial on building a city builder game and I have gotten it so when I hit play, I have a building attached to my mouse and I can move it and click to spawn it in locations. But, for some reason, it is not exactly on my mouse and it won’t build past a certain point to the left or right so I am stuck building on a much smaller map size. Picture included to show you how far to the right I can go, even rotating the map.

I can share shots of all my blueprints as needed, but I really need help figuring out how to extend my buildable area. Any advice welcome