Dear Card Masters:
Latest update: This issue has been fixed, please restart the steam client, then restart the game and try again, again I apologize for the inconvenience, welcome to experience our new version of the relevant content, thank you!
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After we launched the new game version on September 29th at 10:00 (GMT+8), we have received feedback from players that the previously purchased DLCs are not working properly, and we are currently working on fixing the problem. We apologize for the inconvenience caused. We will do our best to resolve this issue as soon as possible.