In order to be able to show Colissimo Tracking you need to enable it directly from your Colissimo Back Office.

Let's see step by step how to proceed! 🔎
 

First you need to log in to your Colissimo Back Office, you'll find the direct link here.
  

Access to Applications section on the top of the page.
 

 
Then scroll down to Web Service de Suivi.
 

At this point it will be asked to read the Terms & Conditions, read them and then tick the option right below.  

Once done, Confirm.
 
You'll be now able to show Tracking Codes for your Shipments with Colissimo.
  

Done! 🎈