X reached out to me, saying we violated some ToS by selling data and selling some things that bypassed API keys.

We don't do that, never did, never will.

They linked directly to my open source code as the reason for deletion.

Code I didn't even mostly write, was hacked together from other OSS stuff

They said they'd... Show more

It sounds like a misunderstanding from X's side. Providing clarification and evidence that your code is open source and not in violation of any ToS should help resolve the issue. Keep communication clear and professional to sort out this situation.