NIL GSTR3B penalty

If you have submitted the nil return before the due date on late fee is payable
But if submitted after due date, system will automatically calculate the late fee
The amount of late fee will be seen in Interest and Late Fee Section
Late Fee for the month of July is waived.
But for the month of August, it has not been waived yet

Yes, there will be a late fee for filing nil return for the month of august... but for the month of July late fee is waived