I am trying to accept my offer online but it says the offer has expired. What can I do?
If the offer is highlighted, you may still click on it to accept. The university is allowing you to accept this offer after the expiry date. However, you should contact the university to verify how long this offer is valid after the expiry date, especially if you are cancelling an accepted offer to accept the new offer with the expired date.
If the offer is not highlighted in red, the university is not allowing you to accept this offer after the expiry date. If you still want to accept their offer, you will need to contact them to discuss whether or not they will send a new offer to the OUAC for you to accept.