If you’ve noticed MTGATracker no longer functioning after the 9/4 patch, you will need to turn on a new setting in the Arena client: “Detailed Logs(plugin support)” . You can find this setting under “View Account.”
This post was written by Spencatro, who now works at Wizards of the Coast as of Dec 2018. MTGATracker remains a 3rd-party project that is not affiliated with Wizards of the Coast, and is published pursuant to the Wizards of the Coast Fan-Content Policy. The views and opinions expressed in this post are strictly those of the author, and do not reflect the official position, policy, views, or opinions of Wizards of the Coast. No authors were compensated by any parties for the authorship of this post.