I found an older post in the forums that gives some good suggestions on what might be missing from your character to start Balance of Power.
Having scanned the posts, I’d check to make sure you’ve completed your Order Hall campaign (to the point where you get your title and you’ve completed the quest A Hero’s Weapon).
Looks like helping Senecgos in Azsuna was a legit prerequisite; that’s good to know.
Once you’ve done all those prerequisites, Kalec will have your Balance of Power starter quest the following day from completing A Hero’s Weapon. There’s still a time-delay for the breadcrumb to appear.