You can activate or deactivate your add-ons in your app or in “My Account” (https://wsc.undo.be/).
Under “MY TARIFF PLAN”, you can click on:

• “SHOW ME” (if you don’t have an active add-on yet) to enable add-ons
• “MANAGE” (if you already have at least one active add-on) to activate additional add-ons and/or deactivate add-ons.