@TourneurHello,
Thank you for sharing the details of your progress and providing such comprehensive information. Taking small steps is indeed the best approach and the most reliable way to achieve your goals. If you encounter any further issues, please do not hesitate to reach out.
A note in the documentation: "If you want to replace the WeBuDi interface with the Rexygen HMI designer interface, just delete the index.hmi.js and save the HMI as index.hmi.svg" is mentioned because the visualization was created using WeBuDi in the above steps. If you didn't follow this process for WeBuDi, this note is not relevant to you.
Keep up the great work, and we're here to help whenever you need it!
Cheers,
Jan