The function included in https://reference.wolfram.com/webMathematica/tutorial/BasicExamples.html for Live 3D Plotting is
MSPLive3D[Plot3D[fun, {x, x0, x1}, {y, y0, y1}, PlotPoints ->pts]]
I realize that using MSPShow instead of MSPLive3D the example works but the graphics can not be moved.
I suppose that MSPLive3D requires some add in the browser (Flash?) and this add is not allow in the new version of the browsers.
Can someone confirm it?