I've looked at the quickstart guide. So I try to follow it the best I can.
My small article (in french): https://blog.fredericbezies-ep.fr/2025/07/27/the-chamber-beneath-un-tres-bon-rog...
There is an embedded video, but I wasn't very lucky and I died too soon :(
I will not despair and try again later today.
Have a good sunday.