Twitch usernames must be unique and between 4-25 characters. Three-letter names are not allowed since 2014. Usernames should be similar across all platforms
TikTok username appears after @ in profile URL and profile picture. Usernames must be unique and limited to 24 characters. Usernames can contain letters, numbers, periods, and underscores
Error can occur due to username change, suspension, or account blocking. Users often change usernames without informing friends. Account may be temporarily disabled or deleted
Roblox username represents player's personality in-game. Unique username availability has decreased as millions register. New players should quickly find unique names
Username represents brand and helps maintain consistent presence. TikTok allows username changes once every 30 days. Username must be unique and contain letters, numbers, underscores, and periods. Maximum username length is 24 characters
Roblox allows users to create and play games through Roblox Studio. Platform uses Luau scripting language for game development. Games can be purchased using Robux in-game currency