Update 2 (2022-01-05, 10:16 UTC):

We have now deployed a fix and the event should be visible again for all players. If it is not showing up in your game, please restart the app.

It may take a few minutes before rankings display on the leaderboard, but no progression should have been lost. We will continue to monitor the situation.

We apologize for any inconvenience caused. Thank you for your patience and understanding.

Update 1 (2022-01-05, 09:45 UTC):

We are making progress on our investigation and starting to work on a fix. Please note that this a database issue pertaining to the Alliance Quest leaderboard. The Alliance Quest Summon Gate may not be visible, or be blocked from use, while the event is disabled.

Initial Post (2022-01-05, 08:55 UTC):

There is currently a known issue with the Clash of Knights Alliance Quest  and we have had to disable it. We are investigating the issue and trying to get it resolved as soon as possible. Our apologies for the inconvenience.

We will post any updates to this issue here.