The <head> section seems to be missing/incomplete on your index page. In your dashboard area, can you go to Appearance->Editor, and then to index.php. Can you see the following at the top of the code:
get_header();
?
Yes this is my index.php
<?php get_header(); ?>
<div id="page">
<!--Inhalt-->
<div id="wrapper">
<div id="left-sidebar"><?php include (TEMPLATEPATH . '/sidebar.php'); ?></div>
<!--post-->
<?php while ( have_posts() ) : the_post() ?>
<div class="entry" id="post-<?php the_ID(); ?>"><div id="headerentry">
<p class="datum"><span class="day"> <?php the_time('jF,Y') ?></span></p>
<div class="entry-top"><h1><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></h1></div> </div>
<div style="clear:both;"></div>
<div class="entry-content">
<?php the_content(); ?>
</div>
<div class="commentpost">※ <?php comments_popup_link('0 Comments', '1 Comments', '% Comments'); ?></div>
<!--post-end-->
</div>
<?php endwhile; ?>
</div> <!--Inhalt-->
</div>
I figured out my problem. It was because of my Jetpack Plugin. I deactivated the mobile theme function and now its working.
But thank you for helping me so fast ^_^
Thanks for following up with your solution! I will make the JetPack support team aware of this thread.
Thanks for reporting this issue. It looks like you currently have Jetpack installed on your site and it is connected properly.
Are you still experiencing trouble with Jetpack? If so, just let me know and I’d be happy to look into things further. If you’d like to keep this conversation private you can contact us using the form on our Contact Support page.