The easiest way to whitelist or banlist users on your Veloren server is by doing the following:
Follow the guide to add admins: https://clients.hostez.io/plugin/support_manager/knowledgebase/view/18/how-can-i-add-admins-to-my-veloren-servers/4/
If you are unable to use the ingame whitelist and banlist commands, you can edit configuration files in the following locations:
In your HostEZ Pterodactyl Control panel, click on your server, then click on File Manager.
In File manager, click on userdata > server > server_config