good luck, i had an actual, admitted bug (disappearing abilities) occur that prevented me from winning the battle and essentially downgrading my league, so lost a bunch of progress/rewards as a result. they didn't compensate for all that.
but i think you are mistaken. you likely defeated the knightfall summon, not appo--if you did kill appo, that was a bug in your favor that should not have occurred.
to explain what happened in your situation, read appo's unique ability:
At the start of encounter, if the ally in the Leader slot is Lord Vader and all other allies are Dark Side Clone Troopers, and there are no enemy Galactic Legends: Appo gains Coruscant Commander until the first time he is defeated, until the end of battle.
If the ally in the Leader slot is Lord Vader and all other allies are Dark Side Clone Troopers:
- At the start of battle, Appo recovers 100% Health and Protection
Coruscant Commander: This character can't be defeated if there is an active ally Lord Vader