What is the ruling on making up prayers in which I prayed behind the Imam without reciting Al-Fatiha, and is it permissible to make them all up in one month?

Scholars differ on the recitation of Al-Fatihah by the worshiper behind the Imam, with various opinions. The relied-upon position on the website is that its recitation is obligatory in both silent and audible prayers. Whoever omits reciting Al-Fatihah due to ijtihad (independent reasoning) or ignorance of the legal ruling, their prayer is valid, and they are not required to make up the prayers they missed. However, whoever intentionally omits it while knowing its obligation, their prayer is invalid.