I can confirm that your service is already activated. However, in order for your connection to work, you'll need to configure the router. Please refer to this guide on how to do so: How to set up TP-LINK C1200 modem
If you have already established a connection between your devices to the router (be it WIFI or Wired connection), proceed directly to the section "3. CONFIGURING ROUTER".
Let me know how it goes.