Switch Design In Beta Server

Hello mates, does anyone know how to swich design in beta server?? i recenty bought the Supremacy Ship and i had the Litlle Buc, but i cant swicht or buy the Big Elite Buc!! Any sugestion?? :(

Buy the big elite ship, then go to "Ship -> designs" inside the client.

The main problem is that it wont let me buy the Big Buccaner in the marked! i already try to buy again the free 0 goldShip but nothing, i´v the supremacy bought but in the sea it does not apears :/ Crap crap.. :(

same me