Dear Commander,
We have identified an issue where Ezio della Notte's [Silent Covenant] cannot benefit from AoE DMG Increase bonuses due to an incorrect skill DMG type.
This issue is currently being fixed. Once the fix is complete, compensation will be issued, and Commanders will need to restart the game to apply the fix.
We sincerely apologize for the inconvenience and thank all Commanders once again for your understanding and support.