Note: this is a whitelist server for only people I know IRL so I am not or will not advertise! So, I need some help! Blocks not breaking: I have to break multiple times before it fully breaks and produces a drop. I don't know how to change names on a vanilla, no plugins server, please tell me! How do you add privileges for certain players? EG flying for me as I am the owner. Thanks!
For the blocks not breaking, that might be server lag. For the privileges and name changing, I suggest you get a bukkit or spigot server
Is the server a default Minecaft one? (downloaded from minecraft.net) Or is it a Bukkit or Spigot one? (downloaded from Bukkit or Spigot) If it's a default Minecaft server than you can't set privileges. The best I could think of is giving them OP or not. If it's a Bukkit/Spigot server I would look here. As for the breaking blocks that's probably just the sever lagging.