Lets do the complete calculation here.
Limit of earnings in kiwis = 1% of CL
Now with subscription we get 2x = 8 kiwis for 100 rs spends
When will we hit the limit of earning rewards in a month ?
X rs --------------> CL/100 kiwis
100 rs ------------> 8 kiwis
now solving for X
X*8 = (CL/100)*100
X = CL/8
SO, you get rewards till CL/8 inr spends and the reward is (CL/8)*(8/100)*0.25 = CL*0.25/100 rs
Lets say you have 80,000 CL you will get rewards till 10K spends per month and later on you wont get any. And the value of rewards is 800*0.25 = 400 rs