World of Warcraft Classic just locked Lava Lash, it's only normal roleplaying realm in Season of Discovery.
With this change, there are no longer any pure RP servers available for new World of Warcraft Classic players to join in Season of Discovery.
Traditionally, World of Warcraft has four types of realms that fans can join: Normal, RP, PvP, and RP-PvP. Each server is classified based on whether WoW characters are automatically flagged for world PvP, and whether players are encouraged to engage with others in-character and follow community roleplaying courtesies.
However, one of these types of realms has effectively been destroyed in World of Warcraft Classic Season of Discovery. In a recent forum post, WoW developer Fwoibles announced that Lava Lash, the only RP server in Season of Discovery, had a population below what World of Warcraft wanted it to be.
As such, the realm has been locked to new accounts, meaning only players with characters on the server already can make new ones there.