Using or creating multiple accounts (multi-accounts) is not allowed. Giving away, receiving, buying, selling, sharing (co-managing one account), or lending accounts is not allowed. Creating a new account to replace the old account is also not allowed, even if you no longer use or have deactivated the old account (you can reactivate your old account if needed).
Additionally, each player should play their own game and enjoy the benefits of only one account. Therefore, it is not allowed to use your account mainly or solely to benefit other accounts. Playing/using accounts in this way means that as a player, you ultimately benefit from multiple accounts, which is not the intention. Each player should only enjoy the benefits of one account. If the usage of multiple accounts is discovered, this may result in a permanent ban for all accounts involved.