Sometimes, even if your NIN details perfectly match your account, the verification may still fail if:
The NIN verification portal is temporarily unavailable.
We are unable to confirm your details
What you can do
Wait a short while and retry the in-app verification process.
If the challenge continues, please send your account number and a clear screenshot of your NIN slip to support@getcarbon.co
Email subject should be NIN Verification issues
Our support team will help you complete the verification process within 24 hours.