Ensure your version of Adobe Illustrator (e.g., v28.0 or later) is compatible with the "UPD" (Updated) version of the plugin.
If the plugin does not appear in your Extensions menu after the update: geometry3daip plugin download illustrator upd
Sometimes clearing your Illustrator Preferences (Cmd/Ctrl + Alt + Shift during startup) can resolve conflicts with newly installed plugins. Ensure your version of Adobe Illustrator (e