I assume you are out of luck. The educational format back then was not compatible with the regular ArchiCAD version.
And from r10 they changed how it works, by making both compatible but with banners in files saved (once) with the EDU version.
--- stefan boeykens --- bim-expert-architect-engineer-musician ---
Archicad28/Revit2024/Rhino8/Solibri/Zoom
MBP2023:14"M2MAX/Sequoia+Win11
Archicad-user since 1998
my Archicad Book