Domain Name Change Error

[ishaaan]

My original address was: http://icode.x10.bz
I tried to change it to some other ones, but it didn't work.
Now when I try to change it back, it won't!
The dropbox under the "Use an x10Hosting subdomain as my account's main domain" doesn't show .x10.bz!!! Please HELP!!

 

[dlukin]

My guess is that their policy is that x10.bz is only available when you create the hosting account.