The Knot Guest Book App ← Knowledge Base Why is my app The Knot Guest Book changing? What are the new features I should be excited for? Which features will be going away in my Guest Book app? How can I set up the #hashtag photo album? How can I set up a PIN to protect access to my wedding website? When can I expect to see this new all-in-one app from The Knot? Will I still be able to access photos guests have already loaded to the App? How can guests access our Wedding Website from their phone? What is the best way to share the mobile-web version of my wedding website? Can I still create a custom domain to share my wedding details and registry?