Theme dont work on mobile

Hello.

I installed your theme and inserted some content.
On desktop it work well, but i am not able to load the sub-pages on my android mobile.

I installed twentthirteen theme, that works great. then i reactivated your theme, same issue.

Can anyone help me? or any ideas?

https://pixotest.he-webpack.de/repa/ (home)
https://pixotest.he-webpack.de/repa/index.php/gastronomiekassen (example sub page)