Now Aamir will study at home should be accepted
Mistake is the best way to learn
They should accept putting the now wherever because you can in English
Is "घर में" the same as "घर पर "?
Yes. They are same.
Why is the audio for ab so weird?
Yes it's difficult to hear as a learner but in normal speech would be fine.
घर में safer है (छौविड़ 19 के लिए)
Is *,,will read at home" a possible translation?
Same as above this is correct
Does पढ़ेगा agree with घर here, and that's why it's not in the feminine form?
No, it's because Aamir is masculine.