Information of the plugin to work correctly on your server.
1) Spigot, PaperMC
You need Spigot or Paper for the plugin to work. Don't use Craftbukkit.
2) Vault + Economy plugin
Both are hard dependencies, the plugin won't work without this. The first, Vault, acts as a bridge for al economy plugin and the second is the actual plugin that 'll manage the economy. I recommend essentialsX