Server missing player list

I have a server from a hoasting site. The server does not have the player list (when you press the up arrow) like the old server my friend hosted off of his computer. We have tried to put in a player list plugin but we are not having any luck.
Is there a document we can enable it in, or something we can upload to get the player list?

Is your server self managed? Can you actually drag/drop resources etc?

If so, take the old resource from the older server and put it in the new one!

Do not forget to add it to AutoStartResources.