Stringing v3 k3

Testing stringing today by this method:

Pla is oke but stil stringing.
Allready thit set retraction from 0.1 to 1.5, no difference, Even possible i must go higher?
Really select the right filament.

Think creality print filament ajustments dont work…

Error in the software i think.
Just changed flate ratio, selected a pla whit setting at 185 degrees, print the same as pla at 250 degrees…

Thats not oke is it?