Thanks for point out the error with the link. Maybe Google want to make sure that someone has a G+ page to view and post message s on Google+ page. To get to the FIRST Robotics on Google+, Please visit Open Robotics University Google+ Page and click view FIRST Robotics on G+ to accept invitation to the community to start sharing with world. Here is the link:
https://plus.google.com/116933350390355237142