This "plugin" (I can't even really call it like that tbh) has some major issues in 1.14...
1.) Worlds load WAY too late on startup
The plugin loads all the worlds, which aren't set in the server.properties (aka not the default worlds) way too late on server startup. At the time the plugin loads the worlds, have most plugins already been enabled.
This can cause issues if the plugins look for the worlds on startup and can't find it due to it not being loaded so far.
Multiverse was able to load the worlds pretty much at the same time as the server loads the default ones, so why does ReWorld not do that?
Also, it seems that the worlds of ReWorld are unloaded by default when no players are in it? Why?
2.) Server freezes when creating a world and huge thread dumps are created.
When you create a world, does the server freeze (which was a normal thing on Multiverse) but here it also stops responding and creates huge thread dumps... Link:
https://pastebin.com/EmY6swsd
3.) Teleport error
When you Teleport between worlds using ReWorld's GUI, does spigot throw an error because the PlayerTeleportEvent was triggered asynchronously which isn't allowed on 1.14
This plugin is really not worth the price as of now... Please if you need a world management plugin, stay with Multiverse Core or MultiWorld since this plugin here can't replace them like it claims to be able to.