I have the original retail SEA version installer and official freeplay page game client download installer. Not working for both version on my friend's PC even game is added and SEA region is selected.

Error is do not have associate copy of SC2 during login.

Reported to Blizzard forum at 1:00AM and now still haven't fixed. IAH SG just screwed up everything.

For those unable to login due to error "do not have associate copy of Starcraft 2",

1. Create another account with new email.
2. Activate your account.
3. Add the Starcraft 2 game.
4. Start Starcraft 2 and login.
5. Agree to T&C and create character.

Don't have to keep trying your current account, it is a bug, and after 3 days you also cannot login.

Don't login through Starcraft 2 before you add the game into your account.