When was the report? Any proof for the date?
The fact that you plagiarized has already been proved to you, so why do you need a date?
Date of the report does not matter now.
Is it that an odd to use something that was made 2017 against me now? I know I made some mistakes way back but it's unfair to use that now after almost 2 years. why now?
Because, you committed a crime period. Crime never dies. I does not matter which year you get caught.
Isn't that a blackmail?
Do you even know what blackmail is?
"
Blackmail is an act of coercion using the threat of revealing or publicizing either substantially true or false, and often damaging, information about a person, to the public, family members, or associates unless certain demands are met. It may involve using threats of physical, mental or emotional harm, or of criminal prosecution, against the victim or someone close to the victim"
Source: https://en.wikipedia.org/wiki/Blackmail