Today I was trying to set up a route and it always failed. Digging into it, I found the following:
MapFactor Navigator Free v7.0.49
France OSM / Hauts De France v44-202106280
United Kingdom v44-202108050
The harbours of Calais and Dunkerque have no routes to Dover/England as of incorrect map information:
Calais: Coastline (path 629353209) is missing
and
Dunkerque: Relation Bassin de l'Atlantique (10626829) partially missing.
OSM is showing the correct outlines of the harbours.
As I'm not very familiar with the technical terms, I still hope it makes sense.