I'm looking at the page that was taken down[1] and it seems to be largely full of pretty basic code snippets demonstrating how to use the Solvers module.
Your DMCA request[2] includes the statements that say, in part, that Fair Use has been considered, that you own the copyright, and that the information in that statement is true and accurate.
Could you elaborate what on that page you consider to be your copyrighted content, and how you came to hold that copyright? Is it the code snippets, as per your comment? Did your company have an employee write that content?
When the DMCA takedown request was being drafted, did someone consider whether those snippets are even qualifies as an Original Work? I'm getting at whether they contain even a minimal level of creativity, as the US Supreme Court has said is a requirement for copyright[3].
[1] https://web.archive.org/web/20220114132753/https://docs.symp...
[2] https://github.com/github/dmca/blob/master/2022/04/2022-04-1...