MathCad 15 permanent Product Codes no longer verified by PTC.

I'm hoping someone might have a quick workaround.  Some years ago we purchased 25 permanent academic student licenses of MathCad 15 from PTC.  I understand that PTC no longer supports MathCad 15 and I've read the FAQs related to the changes.  While the FAQs warn against the risks of continuing to use these licenses, it does say that permanent licenses will still work.  Unfortunately when I now try to verify the Product Code through the MathCad License Setup Wizard and use the usual "acquire a license via the Internet" and then enter the Student educational Product Code along with my account login, an "Unexpected Error" window pops up pointing out that "The trial program software you are requesting is no longer available."  It then points me to the website to purchase the latest version. 

The PTC licensing management team is aware of the issue and suggests that they are looking into recreating a permanent tool that will allow those of us with Product Codes to verify the codes similar to the way we did in past.  The short term solution they offered is to track down the 25 Host IDs we want associated with our product codes and they will manually assign them.  I do not have IT people to track down the 25 Host IDs but I can certainly do a few.  I gave the license management team four IDs to start with.  That was ten days ago and I still have no timeline from them on when they will do the temporary associations.  The new academic year has started and it's already messing up my curriculum. Anyway, if anyone knows of a workaround, I would be most grateful.  Thank you.