Unfortunately, most Kindle models do not support the use of OverDrive eBooks on Kindles in Canada. This is a feature available for US libraries. Included is a link to the OverDrive help document about Kindle devices - you can see if yours is listed there. If it is, you will not be able to borrow HPL’S eBooks: https://help.overdrive.com/en-us/9992.html.
However, there are some other options for you to borrow and read eBooks from the Library. eBooks are available through OverDrive or using an app called Libby with a Hamilton Public Library card. If you don't have a card you can sign up for an eCard here: https://www.hpl.ca/online-registration.
You can access the OverDrive website on a computer or laptop at hpl.overdrive.com and sign in with your Library card and PIN.
If you have a device that can download apps from the App Store (Apple) or the Google Play Store (Android) you can download the Libby app and borrow eBooks using your Library card and PIN.