It's annoying when it happens. Sort of the same thing happened to me with my last order from WI. Suddenly the new staff started to answer the emails and mixed up things to the point I realised i would have to wait forever if i didn't end the process as accepted before the new person messed it up.
Any? I think you chose the one you want at the ad.
Here you will find all info you need i think.
If not on the exact part i link you to look further on the site.