When you use Roofs for adding bookmarks, macOS needs to give permission to do that.
To facilitate this process, Roofs will show an alert when you're about to use the Add Bookmark shortcut for the first time.
1. The dialog 'Grant access to the Roofs application' appears. Press Continue.
2. "Roofs" would like to control this computer using accessibility features: select Open System Preferences.
3. Click to unlock the the lock to make the changes