Fog of War not working (Ghosts of Saltmarsh modules)

The fog of war feature isn't working for several of the GoS maps (Hermitage First and Second floors in the Tammeraut's Fate module). I'm the DM, and my players can't see anything on their screens. It's all black. I've tried resetting and revealing the map, but those permutations don't seem to be working. Any thoughts or advice? Thanks!

I don't see a Pro or a Plus tag next to your name. First check--does the game support Dynamic Lighting? It needs to be created by a current Plus or Pro subscriber. If this is the case, check to make sure that regular fog of war is turned off. If it is on and you have no specifically cleared any areas, no DL settings will reveal the map to players. Beyond that, here is a new checklist for DL troubleshooting . EDIT: Actually, all games should have DL this week, due to the DL event. Check Fog of War.