You have two ways to get your Knak templates into Marketo.
When you sync a template using the Marketo integration bear in mind that you need to use a new name that doesn't exist in the folder that you would like to save to. Also syncing will not work when using nested folders in Marketo so make sure you have a folder setup where you can sync directly. You can always move the template once the sync has taken place.
Need more help? Contact support via live chat within Knak using the chat bubble in the bottom right corner or email firstname.lastname@example.org