Your Show profile.
In the main menu, click on your profile icon on the top left of the screen, cycle to "My Profile", and the option that normally says "Link Account" will be "Account Offline" when offline. Click on that and it'll relaunch to the title screen and attempt a server connection.
I've tried just going to DD, but it'll keep saying "no connection to server" so this was the only way I've personally found to fully try to reestablish connection.