AB2 stalls at Level 16

[Abhosta]

chugging along nicely in AB2 until Level 16. Level opens, construction appears, and 3 cards appear–although two of the three are “grayed out” and unusable. “Tutorial” has three circles. No action is possible. When I attempt to shoot the white fat bird at the construction a red X appears.

Topic

[sal9]

You need to go over the house @abhosta , move the trajectory a little until it turns green.