Unable to answer "What are the opening hours here?" – CPAM de Roubaix-Tourcoing (Government Office) – https://osm.org/node/9169657642 via StreetComplete 62.2:

La nouvelle adresse est : 75 Chaussée de l'Hôtel de ville, 59650 Villeneuve-d'Ascq

Attached photo(s):
https://streetcomplete.app/p/325827.jpg