If you tell me which Windows version you are using (10 or 11), I can provide more specific, step-by-step guidance for setting up the fonts.
The ISM Revit Plugin and ISM Tekla Plugin are often bundled with the main Synchronizer installer, meaning no separate download is required once the core software is installed. System Requirements & Installation ism v6 version 63 download link
To get the legitimate installation media, follow these secure avenues: If you tell me which Windows version you