-Solved-

~~In the boss fight, my character seemed to stuck in the first % of the fight:

1. Balt goes invul
2. Commander is stunned
3. Aurene appear and free us
4. Waiting for "combo attack" with Aurene - [bUG] Nothing happens, no extra skill, anything to stop Balt's attack.
5. Get killed by Balt
6. Revived, resume the fight, Aurene is doing nothing on the side.
7. Removed small health from Balt, goes back to Step 1 - Becomes a loop.

Because of the loop, can't finish the storyline. Help!

Edit: Tried resetting the instance, does not work.~~

My mistake, hardly see the blue circle.

sometimes you have to move in/out/in from your blue cirlce so that the extra button appears.

Omg, that is true! Quite embarassing, haha. On another note, it seems I am able to slowly kill Balt by repeating the first% ever slowly, as his health slowly reduced.