It appears that I have hit a wall, literally. I have a dry wall about 1/2 inch thick and then stone/brick wall behind it. I have used a stud finder and there are no studs. When using a drill bit, I hit brick or stone pretty soon.
Do I need to drill into whatever was behind the drywall? This is a tall curtain with 3 anchor points and other 2 anchors are secure. It is the middle anchor point which is driving me nuts. I have never drilled into brick or stone before, so I am not sure.
EDIT: One of my neighbours pointed out that, likely I have a metal guard plate there, not brick or stone. This is front of the house. The thing is - if I drill more to the left (or right), the middle anchor point of curtain will look weird because it will be off-center. My only other option is to higher or lower?