I understand it was in 2017, I was an inexperienced user then, I realized my mistakes and sincerely apologize.
Here is what Theymos says about the users like you that their plagiarism is detected after a long time. No difference you plagiarized today or some years ago.
- Plagiarism: If you copy some text from somewhere, then you should have a good reason for it, and you must link to the source. Doing otherwise is plagiarism. Changing a few words around doesn't matter. If we find that you plagiarized, then you absolutely will be permanently banned, even if we find it years after you did it.
Even if your last plagiarism has taken place in 2017, based on the rules, you should be banned.