Log in problems

I have been a Telus home customer forever.  A couple of years ago I decided to sign up to Public Mobile for my cell phone service.  Then last year Telus brought in their identity sign in.  Now seems I have one identity number and can no longer get into my Public Mobile account unless I delete my Telus account.  I have tried working this out so many times that now I can no longer get into my Public Mobile account.  Even signing into the Telus App on my iPad/iPhone has me having to change my password.