Two point patio lock won't engage striker / keeper plate

Hello,
I'm a handyman trying to solve a problem with a client's sliding glass door lock.
The multi-point lock does not engage with the latch plate side of the door. It appears that perhaps a part is missing that holds the hooks? The second picture shows the area where the hooks are supposed to engage a striker/keeper . There are two holes as you can see in the photo one at top, one at bottom. I measured approximately 4 3/4 inches between those two holes. Thank you so much for any help!
Chris

Ps. the width of the area with the two holes on the striker/keeper side is 5/8". Thank you!