To link your NIN to First Bank using the web link https://linknin.firstbanknigeria.com/customers, you can follow the steps below:
Visit the web link provided: https://linknin.firstbanknigeria.com/customers
Once on the page, you will likely see an option to enter your details.
Fill in the required information, which may include your NIN and other personal details.
Follow the on-screen instructions to complete the process of linking your NIN to your First Bank account.
Make sure to review all the details you provide for accuracy before submitting the information.
After completing the process, you should receive a confirmation or notification that your NIN has been successfully linked to your First Bank account.
If you encounter any issues or need further assistance during the process, you can reach out to First Bank's customer support for help and guidance.
I hope this helps you link your NIN to your First Bank account successfully. Let me know if you need more information or assistance.