Below the Web Widget information on the Integration Setup Page you will find your shop's unique API credentials. The YOURTOKENHERE segment listed above will need to be replaced by your unique shop's API Header, which can be found as seen in the screenshot below.
The clipboard icon can be clicked to automatically copy the Header information on your computer, and be used to replace the YOURTOKENHERE segment in the example code for the web widget.
Whitelist
You will notice there is a segment on the Integration Setup page for a Widget White-List, this is an approved list of websites that the widget can be implemented. If there are any websites beyond the shop's primary website provided during autoflow shop instance creation, please provide this to support with a request to add the listed web URLs to your shop's Widget White-List.