If you see Ralph could you tell him to update the whitelist?
Soz about that, finals :/
Its banned for obvious reasons.
Also if your using EE, you might as well not play. You'll get bored within a week because you have everything so fast.
Destruction catalyst (assuming its that thing that eats coal to make 3x3 tunnels) isn't banned, just the use of nova catalyst and other tnt-likes cause they lag the server.
On EE, I personally love it cause it makes it easy to build huge projects, which I'd be working on if it wasn't for all the hectic crap in my life.