Just tell them the date you first received the portal 1 email and then about the date of the second notice. Tell them the number of days you are waiting for pr portal credentials email. Also confirm from them if ircc has sent any credential email that you might have missed. Request them if they can leave a note for the concerned officer.Maybe we should reply to portal one and raise a webformpls how did you call IRCC,can you text me the lines to call
You can also add on that while replying to the second notice, you did not get an auto reply. Ask and request them for any sort of solution to this.
Hope it helps.