Regardless of whether Rocket League itself is going, quite Rocket League Trading possibly's Rocket League Garage can go down. The site works on various workers and they can go down paying little mind to the current worker status of Rocket League.
At the point when that is the situation, a mistake page should spring up, clarifying what's new with Rocket League Garage, or it can likewise be a basic blunder text clarifying the site's workers are right now down.
While there is nothing you can physically do to fix the issue, there RL Trading are a couple of steps you can apply to see when the site would be back up.