slug problames!

dear pepole – i would like to shere my slug problem and may be someone can give me a heand with it or reffering me to the soulotion.

soo i put at my wp-admin panel inside the permalinks custom the name
%slug%
it works ok with pages but cant view posts
its looks like the heading url stying with “slug” insted of taking the real slug i jest give. in pages it works fine.

someone… idiea?
you can see it on https://www.shutter.co.il
thanks in advance
josef