+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
https://portal-portail.apps.cic.gc.ca/signin?lang=en

I am unable to Sign in to the IRCC portal to continue my VISA APPLICATION, what can I do to help

Try again. They are often down for a few hours every week for maintenance. It's usually during the night hours (Canada time)

Click on Forgot Password.

If that doesn't help as well, click on 'Report a problem'.

Just FYI, I you created an account on GCkey, you won't be able to log in on IRCC portal. They are completely different.