Aternos team , please, add this plugin:
https://www.spigotmc.org/resources/reward-codes.23226/
Desc: This plugin allows to create a special codes, which can execute commands, give items, send message when executed.
Other features:
- Custom permission nodes
- Automatically check for updates
- Set a date for the reward to expire
This plugin have 1.7+ support 1.7, 1.8, 1.9, 1.10, 1.11)
I'm knowi: alternative plugin is uploaded, but this have more features, which me wanted 
Sorry for my english pls 
