Both my girlfriend and I have experienced a glitch where we were unable to put survivors on the hook while carrying them. It wouldnt even start the bar filling up. instead it would just teleport us to either side of the hook.
Same with me
Try dropping them and pick them up again.
I've seen the same issue as survivor and experienced it myself as killer on PS4. It happens at least once every match
I just had a match where I was unable to hook anyone. My killer just went from side to side.