Mellow and Concentration - Unpredictable Behavior?



I have the 2014 version headband and the SDK and I am trying to read the values of Concentration and Mellow. This used to work fine until few weeks ago however suddenly the values are highly predictable. They either jump to 1.0 as soon as I wear the band or just drop to zero.

I completely understand that these are just experimental and no longer available, however as I mentioned I use to get discrete values until few weeks ago however this is no longer the case.

Any idea, if this is because the headband sensors have weakened or am I missing something here?

Any help on this would be highly appreciated as I am working on a presentation.

Thank you!