I did a couple runs today after transfering my 20 PM.

I completed the rushmore quest but got no favor for completion (no optionals done) just the complete on slay and rush against time. (at level 4)

I have done the kobold quest a couple times now with 2 successes. (both at level 5)

First one presented me with a star (*) for completing the 500 dragonshards and destroying the 6 kobold idols. when i looked at challenge bar it showed 2 favor.

Second run I completed the shards destroyed the idols and destroyed the archon. 3 stars (*) but still it only shows me at 2 favor?!?

could you please explain how this favor mechanic works.

In addition...

I noticed that my challenges still show zero (0) stars (*) on both quests. is this WAI ?

Also are the stars (*) tied to a specific optional? ie if I complete the kobold and destroy the idols but not the archon will i get an additional (3rd) star (*) if i then run it without destroying the idols but kill the archon?