foundryvtt-gmScreen VS lessfog

Not sure what is going on. I downloaded this file https://github.com/ElfFriend-DnD/foundryvtt-gmScreen/files/10094884/gm-screen-final-pre-release.zip unzipped, restarted and enabled. Did you check the permission on the folder you moved to $foundry_data/Data/Modules and make sure the foundry instance can read it?

It's a great module but I don't think it will be updated. See this: https://github.com/ElfFriend-DnD/foundryvtt-gmScreen/issues/130

For anyone interested, here's the project status statement saying that there is unlikely to be a v10 version of the module: https://github.com/ElfFriend-DnD/foundryvtt-gmScreen/issues/130. Of note is that part of the reason for the module being deprecated is that the APIs it uses changed drastically, so taking over maintainership would be less of an update and more of a rewrite.

GM Screen - gives you a GM screen with your custom info.

GM Screen

Bonus: Using the module GM Screen, you can add this journal entry into a pop-up screen that players have access to. It makes it much quicker to use than having to open and close a journal entry multiple times.

Less Fog - Makes the fog of war easier to see through for a GM. Gives a button to toggle between a token's vision and the GM's vision when a token is selected.

Less Fog - lets you control the fog colour for the DM separately from the players. Useful for the DM so they can see what's going on while having tokens selected.

Less Fog

Sounds like you're talking to the right people; good luck getting things set up. For the default lighting changes I was referring to the less fog mod. Not sure it works in v9 (or really in v8 either) but it's something to look at.

Less Fog can make the Fog of War effects transparent for GMs. I don't know why I didn't think of this earlier. You can make it so that even though you only have the token's vision, the areas of that map that are black to the player are just dim or greyed out to you, so you can still see what you're doing.

You could use a mixture of using Less Fog and pre-exploring the area. Drag a token that all players have observer or better access to around the area to fully remove the fog of war, then use Less Fog to change the opacity of the Explored areas to taste.