Hi Erkan, sorry for the late.
I took a look of your site and it seems that you are publishing video using JW Player but without using my plugin. Does your theme include a video player in every single post? If yes, what you need to do is to modify your theme file, single.php or something like that, removing the part of code that retrieves the player.
Can you try to publish a video using the plugin and give me a page link? I you want, I’ll be pleased to help you fix this issue.
Regards.
