The latch that slips into the other window opening the plastic thing that moves around to lock is broken.
Emily from SWISCO responded:
August 8, 2023
Thank you for reaching out to us! I'm afraid the tilt latches are no longer available but we may be able to help with the lock. Take a look at the 90-133L and 90-133R. Review the specifications and see if they match what you're looking for.