finally finally the oath invitation was sent by email yesterday in order to attend the oath session on 04/25/2018 ,, however on E-case when I open it today it is showing as if they sent me this invitation on 04/10/2018 ,, so I was updated one day late ,, I don't know why ,, but anyway I am so close to get done with this ,, so happy that I will never do anything with IRCC anymore in my life