The first picture is the lift mechanism showing the rod (which is connected to the lever) and the part below on the floor. It's supposed to connect that rod to the bolt sticking out on the leg of the machine.
But, the second picture shows that the connector part was somehow split open and no longer connects the rod.
We searched for parts with medical suppliers, to no avail. But, a company named Fastenal here in town found the correct part and actually gave it to us for the family at no charge! Very generous of them! (We thanked them with some chocolate brownies made by Sister Katherman)
So, we will go and install the new part later today, so the lift will work properly from now on.