Images not displayed in email/Canva import

I've created a email design in Canva using images, text boxes, colour gradient backgrounds etc. and wish to use it for my email campaign in CC. However when I use the option to import a PDF once saved from Canva the result is once you send it from CC you end up with an email displaying nothing more than a (x) "right click here to download images" for the recipients. Is there a way to stop this and have it display the Canva created design first time without people receiving a blank email and a download images option or a way to import the design as it has ben created in Canva to use in constant contacts again avoiding images being hidden by the dreaded (x) "right click here"