Yes use this letter to apply as it clearly states that a work.permit too is required. Did you receive this letter along with the previous one or later?
It came with my letter of acceptance that I shared with you firstly. They came together. And in e-mail they explained to me that "
Dear xxx
Congratulations on your acceptance to George Brown College for the September 2019 intake!
A PDF of your official Letter of Acceptance is attached. The Canadian Visa Office accepts electronic copies of Letters of Acceptance, so we will not be sending out a hard copy.
The
OFFER EXPIRY DATE on your Letter of Acceptance is the deadline to pay your tuition fees and accept your offer."
What should I do? I cant take response from Admission Officer for a week.