Finally made it work, like many of you I could not connect to my EU account, and manually running wow.exe it would still send me to US starter ed.
- kill battle net
- kill battle agent (ctrl + alt + delete)
- browse to … \BattleNet\World of Warcraft_retail_\WTF
- open Config.wtf
- search (ctrl + F) for “portal” adapted the value to “EU” (it was on US for me)
- back on :\BattleNet\World of Warcraft_retail_\ opened wow.exe
after that it worked