Hey Marius,
thank you! :grinning:
Unfortunately, I did not check on other phones, haha. Thought it was a problem with any plugin-settings ;)
The thing is, I have not created any projects but static pages. If I change my permalink structure to "default" my page works fine. If I change to "project name" it does not work, like this: http://bjoerndermann.de/illustration/
But this is what lay is telling me:
"Lay Theme needs pretty permalinks. If you change your permalink structure to "Default" your site won't work!"
apropos: I do not know much about HTML-codes ;)
Bjarne