We are aware of an issue causing pages to load incorrectly for some users and expect a fix soon. Sorry for the inconvenience.
If you download the free trial of Mathcad (currently Prime 7.0), you have thirty days of the full version of Mathcad. After that, you have Prime Express. Express will allow you to open and view files as they were filed; but by itself it is a powerful piece of software even with all of the "premium" features disabled.
FAQ about PTC education's licensing program: https://www.ptc.com/en/blogs/cad/free-downloads-for-students-part-2-ptc-academic-licensing-explained
Mathcad Prime 7.0:
https://www.mathcad.com/en/try-and-buy/mathcad-express-free-download/install
https://free-dl.ptc.com/install/pim_installmgr_mathcad.exe
Mathcad 15 M050:
https://www.ptc.com/-/media/Files/Docs/Mathcad/Mathcad15-EN.zip
