adding second account to online banking
I've recently opened a cahs isa for both our children. When I did so, I registered one online/paperless at the time, but not the second (by mistake). I now want to register the second account to the online banking I've set up - but when I click on the link to add an account, it asks me to list the 16 digits on my credit card. And we don't have a credit card for the junior isa. I have the sort code and account number but it won't accept those. Any ideas how I can add this account please?