More Portfolio Pictures

I used to be able to show more than 10 pictures in my portfolio section.
Now it is restricted to 10.
Even if I change it in the settings nothing changes.
What can I do! I need at least 12 pictures.

Is there a possibility to change the size and to show more in one line plus this working for the mobile version, too?
I did change it to 16% but this was not responsive.

http://empoweringvalue.de/empoweringvaluede

Thanks for all your help! Still love the theme! Great works!