I have a problem, I want to make loading to the next map after the door is closed, but after loading to the next map I get stuck in place, even noclip doesn't work, what's going on?
Your third map does not include a trigger_changelevel back to the second. Even if you do not intend for the player to go back to the previous map, you must include the trigger to go there. Make it use only and keep it out of the way somewhere.