Don't be discouraged. Weight loss isn't linear, some weeks will be more/less than others. Often when you don't see a loss on the scale, you are losing inches - did you get measured? Sometimes you don't see a loss for a couple of weeks and then you have a sudden whoosh
Make sure you're getting enough water, salt, oil. If you're exercising, are you doing more than suggested?
It seems counter-intuitive, but sometimes adding an extra packet might make the scale move; I know, we all think cutting back calories even more will make it budge, but I know that sometimes worked for me, and I recall others saying the same, sometimes your body just needs things to be changed up a bit.
Hang in there, IP will work.