Your study permit expired 90 days after program completion so you are applying for a new study permit. It is not an extension. You cannot restore status to student and extend your status. Read the link.
You have applied for a new study permit inside Canada but it will be processed from home country. Right now you are on implied status while you wait for PGWP approval.
https://www.canada.ca/en/immigratio...ervices/study-canada/extend-study-permit.html
If you want to keep studying, you must apply to extend your permit at least 30 days
before it expires.
When do the 90 days begin?
The 90 days begin either
- on the date you get the first notification from your school (such as an email, letter, transcript, etc.) that you completed your program or
- when you get your degree, diploma or certificate.