I'm attempting to convert our story map series template over to using the Portfolio app and I'm running into an issue to where I'm not able to use the URL function for one of my subjects. This URL is a public-facing site and is currently in use by our existing application. I don't know if there are some settings that are preventing this from being recognized as an acceptable URL, but here's the link I'm trying: https://tripcheck.com. It is stating that it is not a valid URL. I'd appreciate any insight if anyone else has experienced this issue.