After upgrade from theme and wp problem with plug in

Hello team, I hope some one can give me a tip. I´m using plug in "WP Display Header" I used this because we liked to have different images on each page, in the header. But today after upgrading WP and catchbox. it´sn not working anymore. I have deactivated the plug in, I have installed rollback plug in to degrade to older version of the theme. But I think it has to do with the upgrade from Wordpress. I had made a backup from sql, from ftp, from backup via plug in. But I don´t know what to do. For me the best would be that someone can give me a hint how I can display different headers in this page. The site is: http://www.yoga-psychotherapie-haas.de/ I hope someone can help me. If more information needed.... I can sent you.