Cant Print to Scale, Scale is Greyed Out

I am trying to print to scale and the scale selection is greyed out. It is in parallel projection and top view. What do I need to do? I have not found an answer from the other posts regarding this issue. I have sketch up make 2016. Thanks for help

scale your model UP x 10, then Scale the print DOWN x 10…

I think it’s the too small bug…

john