MathCAD Download Link

I have purchased MathCAD Prime student license, then installed on my laptop. My laptop had to be reinstalled due to Windows errors, and now I have to reinstall all the apps also. I have licence key to MathCAD, but I can not download the software as I can not find a download link. Could you please help with guiding me to the link or sending it directly to me email so I could download it and install, use my existing key. Thanks