See the timeline between final decision and eCOPR. It is a month and a half, not four days. Anyway, there is a red flag on the G number. It is hard to believe that IRCC would issue a G number within three days, especially since they need to make sure the application is complete. Also, there is no way IRCC issues a Pre-arrival in two months. They need to complete certain pre-screening steps before that. So, I think it is one of the fake accounts.