When you have a representative (lawyer / consultant) they use a representative portal to submit applications of all their clients and manage them. A representative cannot provide you access to their portal and this the application.
See
https://www.canada.ca/en/immigratio...s/authorized-paid-representatives-portal.html
The only way to get access to your application is by creating a GCkey and linking your application to it. However, this will remove the application from your reps account and switch it over to you. Your rep will not longer be able to check any updates or receive any notification from IRCC, since you will receive them directly.
Before you do this, make sure that you discuss it with your rep as it may result in the termination of your retainer with them.