Tah-dah!
The screenshots show the controller expects to take 6.13 µm per step for both axes, so the steppers should be set for (40 mm/rev) / (6.13 um/step) = 6525 step/rev.
To verify that, find the stepper drivers inside the electronics bay, which should look like this:
The side of the driver case has a table with steps per revolution and the corresponding switch settings:
Look down the first column to find 6525, then note the switch positions. My drivers do not have that number, but yours should; if not, there’s a problem.
The switches are in a block along the edge:
In this case, switches SW5 through SW8 are OFF OFF ON OFF, which corresponds to the table entry giving 5000 steps/rev.
Stand on your head, peer inside, and see what you come up with.
Protip: Taking pictures as you go definitely helps!
I must piece your screenshots together and pore over them, which will take some time. Today was my long-delayed eye exam: my pupils are vast dark pools and the screeen is really bright.