FNB online banking

Hello I need some help. I reached out on Twitter and was asked to go to the branch, went to the branch and they told me to contact the call centre, I called the call centre but no one seems to know how to help me hence im writing to you here. Im trying to create an online banking profile as a non FNB client so I can link my standard bank account for PayPal withdrawals. when I go to the FNB online website and try to create a profile I get an error message saying " (E-3) There has been a discrepancy, possibly due to the information you have submitted. We apologies for the inconvenience. " I need to know what this means and how to solve it.