Plot a customized contour plot

I am using Mathcad Prime Release 10.0 and Datecode10.0.1.0

I am trying to draw a contour plot for a publication paper. I drew the contour plot but when I export the plot to the paper after reduction to fit a double columns format paper the fonts of the contour plot axes and the legend font are too small and not readable. I tried many things and could not find a way to control the font size of the plot and legend. Need guide what to do.

Here are the errors that I faced
No error message.