Thanks for all the details!! I'm actually not sure which office my file is with. Is there any way I could check this? The mailbox that sent me the interview notice was Winnipeg, but my residence address is in Vancouver BC.All what you facing is normal no need to panic, your invitation will be send any tim next week, they send it a week before oath.you only panic if the invitation not received 3 days before oath. Yes there is form to fill will be with the invitation email you fill it, sign it and send it once you do your oath. If you have a proof of urgency you can ask but usually they don't care,and most the time they don't get late 1 to 2 weeks depending on how far you leave from the office of IRCC. Oh I forgot to ask what office your file with or where do you live to give you more accurate information. Regarding the e-certificate it's only for small group of people IRCC choose randomly at the beginning of the file processing.