I followed the instructions and at first, it seemed to work well. The suction was strong and it stuck to the wall firmly. But after 3 days, it just randomly fell off on its own (without anything on it). I put it back on the wall, and the suction felt strong and secure again, but after 2-3 days, it just randomly fell off again. Next time, it fell off after 1 day. I don't know why but it just doesn't stay on. In the end, it's useless and the seller won't reply.