Did you follow the DCMA instructions on their DCMA page (
https://www.porntrex.com/dmca/ ) exactly? Writing the following does not typically cut it:
Please remove all content from my sites.
I can show some releases from these videos but really you need all?
I never uploaded videos on your site and if yes 100% these no were full-time videos.
Did you give them the list of Porntrex urls they asked for?
Releases don't mean anything as far as ownership. They need the statements "a good faith belief that use of the aforementioned material is not authorized by the copyright owner, its agents, or the law." and "I swear, under penalty of perjury, that the information in the notification is accurate and that I am the (copyright) owner or am authorized to act on behalf of the owner of an exclusive right that is allegedly infringed".