I have just created a new project, defined my epics and created stories.
I detailed the stories start' and due dates, but when I go to roadmaps, that doesn't show in the graphic. (I'm trying this on a free plan, but I have other projects in here that shows the dates in the graphic).

I have checked on settings, and I don't find somewhere else where I could set something else.

Thank you so much for your help.