XO Skins Coupon Code 40% Off

Hm, I tried ordering a few things and then putting in the coupon code... and it tells me that it can only be used once...

... even though this is the first time ordering stuff from them.
 
Looks like they tweeted this last night

XO Skins ‏@xoskins

There was an error with the Memorial Day coupon codes that has since been corrected. We certainly apologize for the error.
 
Crap I just ordered the White carbon the other night . Oh well it wasn't that much and I will only use it until Skin-it gets the EvoLTE on board.