Account & Password Requirements

When registering with an account and password, please follow the requirements below:

Account

• Must be 3–20 characters long.

• Only lowercase letters (a–z), numbers (0–9), periods (.), and underscores (_) are allowed.

• Other special characters are not supported.

Password

• Must be at least 6 characters long.

• Must contain both letters and numbers.

這樣比較符合英文 Help Center 的寫法，簡潔、自然，也符合你之前幫助中心文章的風格。