I think you are gong to have to wait it out for Blizzard support on this one Trog, I had no issues when I clicked 'Add Game' for the NA version.
Activation Procedures
Once the new patch is available, you can log into the
Battle.net Account Management at
www.battle.net with your username and password.
After you have logged in, click “Account” in the upper left-hand corner of the site. Under “Your Game Accounts”, there will be an option to “Add Game” for the NA version of StarCraft II: Wings of Liberty.
To activate, just click “Add Game” and you will immediately have the NA license on your
Battle.net Account.
The in-game region selector will be integrated into the StarCraft II client. You can choose which region to play in before logging into your
Battle.net account.
IMPORTANT: Be advised that patching and maintenance takes place at different times in each region. As a result you might be temporarily unable to access SEA games if you download the latest patch by connecting to NA.
If you connect to the NA region with a new patch, you will be unable to play in SEA/ANZ until this region is updated to the new patch as well, typically a day later. Once all regions have been updated to the same patch this will no longer be an issue. Please take this into account when deciding when and where you'll play during patch days.
Frequently Asked Questions (FAQ)
Q: Who is eligible to play on the North American servers? How much will this cost?
A: All players, including those in the regions of Hong Kong and Macau, who purchase the English Southeast Asia/Australia/New Zealand standard or Collector’s Edition of StarCraft II: Wings of Liberty will have the option of playing on the North American
Battle.net servers in addition to the Southeast Asia/Australia/New Zealand servers. The option to play on North American
Battle.net servers will come at no additional cost to players who have purchased the Southeast Asia/Australia/New Zealand version of StarCraft II: Wings of Liberty.
Q: How will access to the North American servers be granted?
A: All players with a copy of the Southeast Asia/Australia/New Zealand version will automatically gain the ability to access the North American servers -- this will be handled through
Battle.net account management.
Q: What will happen with my Southeast Asia/Australia/New Zealand
Battle.net account?
A: Once you get access to the North American
Battle.net servers, you will have access to both regions for online play. You can choose which one to play on at any given time, and can switch back and forth at will.
Q: How will my friends list and rankings be handled?
A: All account-specific data, including friends lists, rankings, achievements, statistics, titles, and unlockable rewards, will be tracked separately for each region's
Battle.net servers, and will not carry over between them.
Q: Will I be able to play on any of the other StarCraft II: Wings of Liberty regional servers?
A: No. Players who purchase the Southeast Asia/Australia/New Zealand version of StarCraft II will have access to the Southeast Asia/Australia/New Zealand and the North American
Battle.net servers. No other multi-region play will be available at this time.
http://sea.battle.net/sc2/en/blog/72596