I've been through this before. It has nothing to do with routing numbers like in wire transfers in the US.
Go to the help tab. Use search for Canadian Direct Deposit then click on Publisher Payment Options. That will bring up the following including a sample picture which I have not included here.
For all Canadian publishers that reach a $35 CAD minimum each month.
In order to receive direct deposit, you will select the country you are banking
in and then enter the bank name, bank account number you wish to use, and the routing number. Please do not include any hyphens when entering these numbers. Your routing number contains 8 digits, broken into a set of 5 digits followed a set of 3 digits, and can be found on your checks as shown below. You will need to reverse the order of those two sets of digits and add a zero to the front to come up with your correct 9-digit routing number. For example, if the routing number on your check appears as "12345-678", you will enter it in the routing code field as "067812345".
Again the sample pic really helps