Game won't let me into GNR building after installing relay

I've just installed the relay and fast traveled back to the GNR building but the game has glitched and says the door is locked even though when I press the buzzer he says its open. I'm playing on Xbox One, I've restarted the game but don't know what to do. There isn't another way into the building is there?

I've looked in this subreddit and others but everyone keeps talking about getting to GNR for the first time