Open/close window crank broken?

Thanks for reaching out! There is a chance that we can supply you with the replacement operator you need but I will need to see a photo of the arms that help to push the sash in and out. Unfortunately, I am unable to confirm the exact replacement you need using the photo of the base of the operator.

Are you able to open the window? If not, are there any similar windows in the home that use a similar operator?