I haven’t warred in a long time so I don’t know what it’s like now, but this sounds like something that happened before. Remember, with Dominations you see a lot of the same bugs, even if they are years apart. Anyway, back then, the number of stars you got in the actual battle may or may not be the number of stars that registered on the war screen. After it happened to me I started screen-shoting the end of every battle when the stars come up so I could prove I got the base on discord if necessary. This was before replays I think, and back when atomic was the top age. I don’t remember how long till it was fixed but it was a while. If I remember something was going wonky communication wise and the game would only be aware of a certain length of time in the battle. If the entire duration of the battle registered the stars were correctly reflected on the war screen. If only part of the battle registered then obviously the incorrect number of stars were reflected.