Hello again 
Since I gave up trying to use nk3 on Mageia8 I accidentely tried to
start the gpg --card-edit as root and this worked.
So I wonder why. After I read an other thread here I check the
status of the pcscd.
When I am loggin in as root then this is enabled and active.
When not this is not active. So this is maybe the reason why I can’t use the nk3 as non root user.
So I must activate the deamon on startup for my user account right?
best regard