License issue Prime 10 vs 9

We bought Mathcad earlier this year.  I believe we bought it in February.  I have a new computer and just went to install it.  I downloaded and installed Mathcad Prime 10.  When we pointed to our license server, it doesn't work -- we only get Express functionality.  My IT guys think I need to download Mathcad Prime 9 and that the problem is that our license doesn't support 10.  That surprised me because we only bought it a couple of months before the update, but the message seems to indicate that could be the problem.  See below:

8/15/2024 10:49:42 PM : The license request failed.
Requesting MathcadPrime ...
7788@XXXlicense003: (-21) License file does not support this version.

If I need to download 9, how do I do that? Or do we need a new license file on our server to reflect the update and allow 10 to work?

Thanks