احسن الله اليكم (Regarding my previous question about imams saying ولا الزالين) Sometimes they pronounce the fatiha properly and sometimes they don't (they can say it properly), does this change the ruling? There is also others present who can pronounce the fatiha but they don't lead the prayer.

Ustadh AbdulAziz al-Haqqan

If he is the imam arratib and he is doing his best and not intentionally, Allah does not burden a soul with that which it can not fulfill.