I don’t know if you already figured this out but the effect of the height map shuould be visible if you go to Meterials-Default-Edit in your 3D View and turn up the slider of the scale for the height map. If you run into another problem with Substance softwares I think you get a quicker answer if you use the the Allegorithmic Forum on their website. Don’t know it a lot of people on here actually use Designer. 