The community will undergo maintenance on October 16th at 10:00 PM PDT and will be unavailable for up to one hour.
Since PTC can no longer sell MathCAD or MathCAD Prine prior to release 7, your chance of getting PTC to fix it or between slim and none.
PTC will issue a new license file for the older versions.
MathCAD 7 and MathCAD Prime 7 are two different animals!
PTC cannot sell any version of MathCAD or MathCAD Prime prior to MathCAD Prime 7 anymore.
You should know this: https://community.ptc.com/t5/Mathcad-Tips/Official-PTC-Mathcad-15-and-Prime-1-6-End-of-Sale-Announcement/ta-p/818870
In short, you'll need help from PTC to get your Mathcad 14 licensed. => Contact PTC support.
Success!
Luc