We are working on a lobby rework for online multiplayer, making it easier to use and play games with friends. Sadly that means we are currently experiencing some issues with online multiplayer.
We hope to resolve the issue as soon as possible.
While the issue persists, you can always play some solo Defend the Eye to practice your aim, or invite your online friends over for a Local rumble.
Thank you for you patience wizards, we will have you brawling across the ether as soon as we can!