As long as you have access to the portal using the email from which the portal was created, it should be fine.I have a question, if any of you were in same situation.
I got portal 1 email on Aug 15, and portal 2 email on Sep 05. For PGP you create portal at the beginning when submitting an application, to give a consent to representative. When CIC sent me portal 1 email requesting information, I sent them my regular email but I realized the portal was made on my college email. I resent them email with correct email next day. But they sent me portal 2 and added a case to wrong email that was sent first. Anybody else in the same situation. Now I have to get it fixed to my college email. I have sent the webform. Agents on the phone said they cant really do anything about it as portals are totally different department.
Just don't lose your password.