Graphic Link Broken

I have a survey with an embedded graphic. It is on page two of here:

http://www.roi-ally.com/index.php/en/employee-empowerment-survey

In the quesiton editor I can see the graphic.

In the front end, Inspect shows this as the URL:

http://www.roi-ally.com/index.php/en/images/authcontin.png

In the back end the editor shows the graphic and uses this relative URL:

images/authcontin.png

The actual address is:

http://www.roi-ally.com/images/authcontin.png

SEF is on.

If I paste in the complete URL the editor (TinyMCE?) corrects it to the relative URL.

Is there some way I can correct this?

Thank you!