I'm afraid you will have to go to Graphisoft or the reseller. When our class-license was upgraded to ArchiCAD 8.x (we are on 10 now), we had to send the dongle back, so even if I could install the software, it would not run.
--- stefan boeykens --- bim-expert-architect-engineer-musician --- Archicad27/Revit2023/Rhino8/Unity/Solibri/Zoom MBP2023:14"M2MAX/Sonoma+Win11 Archicad-user since 1998 my Archicad Book