@stuartman email them during Canadian working hours. I had a similar issue and someone told me to do this and believe it or not, I received portal login details with in 17 mins.Inland principal with 2 outland dependents
Got the portal email on June 27 and responded back immediately. Haven't received the login credential as of today.
Tried following up with that email but no response. Called the IRCC client service and was told it's probably due to the outland dependents so the VLU (Ottawa) is not taking any action.
I don't know why it's so hard for them to create the login as I am already in Canada or at least they could just repond back to my emails letting me know what's going on. I am so disappointed about the way they are treating the applicants