Spigot: https://www.spigotmc.org/resources/cloudnet-lobbyswitcher.67475/
»You may not resell the plugin / website
»You may not offer the plugin / website for download anywhere else
"Every bug / bug should be posted in the thread of the resource, not in the review area, otherwise I will not give support for reported bugs in the review area
»You may not claim ownership of this resource
»If you do not want to pay anything, you can build the plugin yourself for free, but you will not receive any support for the result and building.