Hi Dastan,
The reason I asked if you were from bwin is that the 'account name' registration method doesn't work there. Only found out recently and changed the registration page etc.
So if you want to play bwin or multiple skins you need a code, but that's not difficult. To get a code you need to
go here and run the tool from your desktop and email the info saying you want to switch to a code. You can do that straight away if you like to avoid delay if you ever want to switch. You can have two codes if you use a laptop as well or whatever.