Connecting Hyundai and Kia vehicles goes through the Bluelink app (Hyundai) or Kia Connect app (Kia). Errors often happen when the login details entered are incorrect or expired.
Main cause of connection errors
Connection most often fails because of incorrect or expired Bluelink or Kia Connect credentials, a wrong password, an inactive account, or an app that was never set up.
What to do?
Check your Bluelink / Kia Connect credentials. Open the app and log in with your usual credentials. If login fails in the app itself, reset your password before trying to connect on Voltaback again.
Your vehicle must be linked to your account. Check that your vehicle appears in the app's vehicle list. A vehicle that isn't linked will prevent any data sharing with Voltaback.
Connected services must be turned on. Check that connected services (telematics, data sharing) are turned on in your app settings. Some models require manual activation the first time you use them.