Some problems when creating a server and questions

Q: How to remove the display of the default hood that appears when you hover over a player?
A: Go into your disableddefaults.lua and change hud from False -> True.

Q: Windows do not appear when starting the server (map). Appear only after Cleanup
A: This seems like an issue with the map itself. An easy temporary solution to this problem is to set a scheduled task in the servers control panel that runs "cleardecals" every 30 minutes. Some maps I've seen the windows are just decals with collisions. This would either send your windows into the abyss (New map recommended) or it will respawn all windows.

Q: How do I turn on notifications about a player's profession change?
A: This should be a setting enabled in default darkrp. Try checking in disableddefaults.lua or settings.lua.