I booked an economy ticket on QR. It was Economy Classic/Convenience, on the ticket it says Economy (L) which I read means Lite, but it was not called that during the booking.

The booking screen said '1 change allowed' for return trip and '2 changes allowed' for the outgoing one.

Does this mean I'm allowed to change my dates once/twice with no extra fees other than fare difference?

also if I change the booking withing 24hrs (trying to find lower rates) does that count?