CANVA FOR JOOMLA NO API BOX

Hi Guys - soooo Excited about the CANVA but not there is no API box like in the video shown - when click on editor button it directs to log in page for canva - log in and then it is just a black overlay that stays on the joomla page - HELP please !!!!!!!!!!!!!!!!!!!!!!!!!!! see the screenshot here attached please anybody who can help out!