Open a web browser on your computer or mobile device. Go to the TLC activation website by entering the following URL in the browser's address bar tlc.com/link. You will be prompted to sign in with your TLC account or create a new account if  you don't have one. Follow the on-screen instructions to complete the sign-in or account creation process. After signing in or creating an account, you will be asked to enter the activation code displayed on your smart TV screen. Make sure to keep your TV on and set to the TLC app.