CraftBukkit/Spigot does not even start the server after queue time wait

I've been using Aternos for a while now since it's such a convenient place for me to have fun with friends in minecraft. But....

I wanted to make a castle wall with the World Edit Plugin in CraftBukkit. Keep in mind I'm changing the gametype from Vanilla to CraftBukkit. The only plugin I have is World Edit, but with CraftBukkit, I am not able to start the server. Any help?

-Vanilla to CraftBukkit
-WorldEdit only plugin
-Does not even start the server. Just offline as soon as queue time wait is done

Thanks family :^)