Here are 2 plugin that i got off Bukkit.DEV that Andres gave me here are the 2 check them out
Enjin - DonationCraft - Donation & Website Plugin Link Below
http://dev.bukkit.org/bukkit-plugins/emp/
Enjin Forum Link V1.4 Link your Enjin site to your MC server!
http://dev.bukkit.org/bukkit-p…rum-link-link-your-enjin/
These Might Work On Aternos Please Give Them A Try At Least 
Give Them A Try Plz Trust Me They Will Work You Guys Never Tryed them So You Dont Know If They Will Work I Am 100% Guarantee They Will Work Please Give Me A Chance And Run Them Though Aternos
