As far as I know you can only lose champs to leveling/ranking/skilling other champs and to fusions, if you're losing champs in any other way I guess you'll have to contact the ingame support...
I’ve got the same issue. One of my champions is suddenly gone. I know I didn’t use it as food. I actually had just leveled the champion in the tavern then went to use it elsewhere and it was gone.
I’ve got the same issue. One of my champions is suddenly gone. I know I didn’t use it as food. I actually had just leveled the champion in the tavern then went to use it elsewhere and it was gone.