Connecting Canvas is optional. It adds your assignments and due dates to DormWay. DormWay only reads from Canvas and never changes or submits anything.
Canvas connects through your Calendar Feed link. See How to get your Canvas ICS link for step-by-step instructions.
I connected with an access token before
We no longer use Canvas access tokens. If you connected that way, DormWay will ask you to switch to your calendar feed link. It takes about a minute, and your synced assignments stay where they are.