I say, with the help of Allah: It is not permissible to make up a missed prayer after the sun has changed before sunset, even if it is before praying the Asr prayer, and the prayer would be invalid; because after the sun has changed before sunset is a time of corruption and invalidity, thus it is not permissible. Refer to: Tabyin al-Haqaiq 1: 87, and Allah knows best.