UUID help. (Bungee Related?)

I have been having this issue where when I leave and rejoin my server it resets my stats. Reset Inventory, Given /kit tools, and given a Welcome Message. From further investigation I have came to the fact that it is a problem with UUID's. How do I turn off UUID checks? I do not understand this tutorial (http://www.spigotmc.org/wiki/uuid-conversion/)

Title: Im running Bungee and its an error with offline mode, so I'm posting here.