Being familiar with DMCA/copyright violations, Epic literally can’t do anything until the copyright holder reports it. You can’t report it, I can’t report it - only the holder otherwise they lose some protections under DMCA:
"…takedown notices under 17 U.S.C. §512(c)(3) must substantially comply with certain statutory requirements.
A proper takedown notice needs to be in writing, and substantially include: (1) the physical or e-signature of the copyright owner, or a person authorized to act on the owner’s behalf; (2) identification of the copyrighted work claimed to have been infringed, or a representative list of works at a specific site if multiple copyrighted works are covered in a single notice; (3) identification of the allegedly infringing material to be removed, with enough information to allow the service provider to find the material"