First, you need to CONTACT SUPPORT and make sure your account is approved for accepting and depositing Canadian Checks. Once you know for sure you can accept them take a look at this article:

Canadian Routing Numbers are different from those in the United States. They contain a DASH (-) and 8-digits. In the U.S. the routing number always contains 9 and never has a dash.

***Please be aware that your bank may charge an additional fee for converting a Canadian Check into U.S. funds, or for processing Canadian Checks into your U.S. account. This fee is in addition to ours and is not under our control. Please check with your financial institution before accepting Canadian Checks to make sure you know the costs involved.***