What on earth is happening to my nose tip when smiling? Pinched and dented (Photo)

A known complication of rhinoplasty surgery is called a pinched tip deformity. This often results when there is overresection of the lower lateral cartilages. It is difficult to say from your photographs however, my advice would be to seek a second opinion from a board certified or board, eligible plastic surgeon, who has extensive experience in revision rhinoplasty.
Kind Regards,
Amer Nassar, MDPlastic and Reconstructive Surgeon