The article will tell you how to setup a whitelist for your Ark survival evolved game server.
As an admin with cheats enabled, use the following console commands:
cheat AllowPlayerToJoinNoCheck SteamID
cheat DisallowPlayerToJoinNoCheck SteamID
Where SteamID is their numeric ID. Also then you can manually edit this file that will be generated:
\ARK\ShooterGame\Binaries\Win64\PlayersJoinNoCheckList.txt
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