We have created a trial pinterest app for API access and integrated Pinterest's APIs into our application. I am ready to submit my app for upgrading, but when I attempt to upload the required video showing the use of Pinterest in our app, after the upload the page says its is processing for a couple of minutes then I get the error "Hmm, something went wrong. Please try again.". The video is a 8.3 MB mp4 video. Is this a known issue? Is there an alternate way I can submit a link to the video?