Text has moved above the menu

The message for non-logged in members has moved to above the main menu.
Do you know how I can fix this, so that it appears down the page, where it belongs?

http://ancestraldoctors.org/wp-content/uploads/2015/07/screenshot-ancestraldoctors-org-2015-09-18-14-44-16.png

here is a page where you can see this issue:
http://ancestraldoctors.org/powerpoints/

https://ww.wp.xz.cn/plugins/simple-membership/