Why can't I use LOL training mode? Can't use it in the future?

Recently, the training mode can't be used, because League of Legends has a new mode, the server is full, and the pressure on the server is too great. In order not to affect the player's game experience, we can't add training mode and custom mode yet. I don't know when to resume.

Introduction to League of Legends:

League of Legends, referred to as LOL, is a hero-to-MOBA online game developed by RiotGames in the United States and operated by tencent games in Chinese mainland. There are hundreds of personality heroes in the game, as well as some special cultivation systems such as ranking system and rune system.

League of Legends is committed to promoting the development of global e-sports. In addition to developing professional leagues and building an e-sports system, League of Legends will hold three world-class events every year, including League of Legends mid-season championship, League of Legends global finals and League of Legends all-star game, forming its own unique e-sports culture.