Why there are no Index S2 available just anywhere?

I am a long time user of the original index scale, in the scale settings there is an activity class setting that could be adjusted mine was set to the number 7  it matched pretty close to my dexa body scan changing the activity class will change how the numbers are displayed. My body fat numbers under the old index would would range from 13.5% to 9.9% which was probably in the ball park. 

The new index s2 with the same activity class of 7 has my body fat range 18% to 25% but the interesting thing is as my weight is going down the body fat number is going up. I have not really done much with trying different activity class settings to see if I can get it to act like the old index scale. In all honesty I never have paid much attention to all of the other metrics the scale has to offer. I do really like the weather widget though! 

I'll try changing the activity class setting a bit and respond back if I get it to act more like my old scale, comparing the old vs the new at this point I would say my old scale gave more accurate body metric numbers but at least the weight is dead on;)

(Edit) I did try different activity class settings last night class 10 gave me results that are probably fairly close but I would not fall into the the description of class 10 I would be more 7-8.