[Plugin: Contact Form 7] image not showing

Hi I used contact us form 7 (Version 2.0.5) successfully afer initial installation a few days ago. Then I moved the whole WordPress site to the root folder with FTP and since then the image does not display. I have checked that uploads go to the “/wp-content/uploads” folder and that the folder is writeable. I have however changed the WordPress table prefixes for security reasons. Could that have an effect on the display of the image?

https://www.ads-software.com/extend/plugins/contact-form-7/