Hello IU_9818989,
Are you able to download the software Matcad Prime 7. thropugh the mentioned link from VladimirN?
Regards,
Saad
If you're a customer and entitled to it, you can log into PTC Support and download Mathcad Prime 7 here: https://support.ptc.com/appserver/auth/it/esd/product.jsp?prodFamily=MCP