So in general, u recommend training the low % gray areas for a new position or SA will boost the gain by 20-30% according to new update?
yes, ok not necessarily grey areas but skills that have lower % than others.

And one must target low white areas to boost training gain for players than high white areas?
With first training, go for useful white skills (till 140-150%)
Then go for the rest white and finally for the grey

Unfortunately I can see ur screenshots.
why ?

Maybe try a browser in your mobile instead of Tapatalk