I experienced a service issue affecting the Board Symmetry Exercise feature from shortly after 18:00 to approximately 23:30 (UTC) on April 25, 2026.
During this period, users may have encountered problems while using the following feature:
Board Symmetry Exercise: The exercise did not function correctly in some cases.
The issue has since been identified and resolved.
Please reload your browser before using the feature again to ensure the fix is applied.
I sincerely apologize for the inconvenience.