Thank you so much for the kind words and for reporting this!
I’ve just shipped a hotfix for the Mermaid rendering issue. Could you update to the latest build via Help -> Check for Updates, then reopen the project and try the diagrams again (v1.0.3)?
If diagrams still don’t render, please send this file to camyesili25@gmail.com:
%LOCALAPPDATA%\GDDKit\Logs\mermaid-render.log
