This plugin has now been recoded and has a completely new configuration. Therefore, I would like to ask you to delete the old config and reload the plugin completely.
The commands are still the same, but the /tp command has been reworked, and you can now also do /tp <player name> <player name>, just like you know it in vanilla Minecraft.
The permissions are now also in the config and can be changed at will.
The plugin is also GitHub, so feel free to check it out if you are interested.
I will now also change the start page of the plugin. So that everything is up-to-date there and will then also give a warning for all who have the older versions.
Wishes and suggestions in the comments, and with that I wish you a lot of fun with the new Essentials2.