Turns out this has been a known issue for many versions. I was able to find a workaround solution through a numbers of forum posts.
Here's how you fix it:
In the same Revit session, start a new project.
Switch back to your issued project file, go to Manage tab > Transfer Project Standards
Scroll down to “Project Info” and click ok to transfer the setting.
That’s it. Now the Project Information icon will become available and you can modify the info in your project.