The game feature is that quests appear in a certain order and tasks become more complicated in the course of the game while you move forward and advance further in the storyline. Thus, to get new quests you should first complete the ones you have at the moment.
You will get access to new rooms as soon as you complete the necessary quests chains regardless the level in the game. You can open a task window and then press the quests group icon at the top of the information window to see a hint on the purpose of this task.
Have more questions? Submit a request