Board Thread:Off Topic/@comment-33789941-20180101171518/@comment-31441954-20180120232730

they didnt remove guests. it is still stated in their privacy and cooki policy:

Guest users

Roblox users may play as “guests” without creating a Roblox account; in guest mode, users remain anonymous in their interactions within the Service and games, and do not have access to chat features, cannot use the personal messaging platform, cannot post to the forums or groups, and are subject to other restrictions (a) determined by Roblox from time to time and (b) designed to prevent users from sharing personal information, whether intentionally or otherwise. As guests, users are unable to save play statistics, accumulate points, share models, create games, or participate in the Roblox virtual economy.