Generally, the Authorization Error (400-2) is generated from your TV Provider. To fix this issue, you can consider these steps: 1. Select the Account option on your ABC app. 2. Tap Sign Out in the TV provider listing. 3. Select the Sign Out option again and press the OK button to confirm. 4. Next, force quit the ABC app and reload it. 5. Then, tap the Account option from the ABC app and sign in to your TV Provider. 6. Enter the activation code on abc.com/activate to link your device.