Mathcad 15 Permanent License Re-Host to New Computer

I have an existing permanent node-locked educational license for Mathcad 15 and am moving Mathcad from my old computer to a new Windows 11 computer. I still have the original product code and existing license file. Mathcad 15 is installed and running to the point where it requests licensing. The Mathcad Single User/Student Get License page accepts my product code but redirects me to License Management, where my PTC account reports insufficient privileges. The Single User/Student Log Case option also does not proceed. I need assistance re-hosting my existing permanent Mathcad 15 license to the new computer and obtaining a replacement license file for the new Host ID. I can provide the old and new Host IDs, product code, and existing license file privately if required.