To view your ticket history, update your tickets, or follow articles, you will need to sign in to the help center for that specific game.
To submit a ticket, you will want to sign in to your Wizards Account in the upper right-hand corner of the help center.
If you don't have a Wizards Account, you can create one here, or download the MTG Arena client.
For more information about our account systems, please see our Account FAQ here.