Not released steam game got DMCA

Hello,
there was a game for about a month on steam called “Unreal Sandbox”.
The release date was scheduled for the 17th of March 2020, but a few days before the release the developer got a mail from Valve that the game got a DMCA from Epic Games.

He already contacted the person who send the DMCA (person named in the DMCA document), but didn’t got any answer yet.

Now is my question: Is there any other way to get in closer contact with you, or should he just wait longer?
(Contacted the Person last Friday)

Also: can you tell me and/or the Developer why he got the DMCA? Because he still doesn’t know why that happend…

Best Regards

Hi there, Epic has reached out directly to the developer of Unreal Sandbox to discuss this issue and find a path forward.