WoW Game Data Mythic Keystone Leaderboard API is broken

This API has been broken for months. Normally I was able to grab this data on-demand without any issue, but many months ago it stopped working. After it stopped working the API would only work after server restarts on Tuesday and may work just fine for 1-2 days. Today, I’m not seeing all the data for period 912.

Would someone please look into this and resolve this problem.