When writers say an ending does not feel earned, they often mean that the story is technically resolved but not fully paid off. The plot may close, yet the emotional or thematic logic does not fully satisfy the promise made by the setup and middle.
This usually happens when the earlier chapters do not build enough pressure, when the protagonist has not changed visibly enough, or when the final turn solves the conflict without landing on the deeper question the story has been carrying.
A useful ending analysis asks whether the story has steadily prepared the reader for this exact result, or whether the conclusion feels like a clever move that the outline did not quite spend enough time earning.