Pinterest prohibits the use of short links in their content. So, if the text of your content and/or the Pin Destination Link field on your content contains a short link, Pinterest may reject the post. You may receive an error from Pinterest stating, "We could not complete that request."
When you use Edgar's link shortening feature, we take care of this for you on our end to make sure your Pins publish correctly. However, if you paste a short link into the text of your post, Edgar is not able to unshorten the link prior to sending and the post may be rejected by Pinterest.