If it hadn't had been for your post, I would not have discovered what the problem was.

In short, if anyone is experiencing this problem with the 'security code', it relates to the First Direct mobile banking app. Go to the app, select 'Go to security codes', select 'Log on security code', enter your usual 'Digital Secure Key password' and then hit 'Generate security code'. That will give you a 6 digit code which you have to input on the relevant QB bank connection field. Will that bank-feed connection last until I next need to log into QB? Who knows?

In an effort to frustrate fraudsters, First Direct continue to frustrate their customers instead by throwing in more and more layers of 'security' to the point where accessing and managing my FD account is putting me off doing anything other checking my balance. I currently have to employ THREE different passwords to access FD services through either voice calls, mobile app and pc access. Am I impressed by such diligence to security issues? No, because it amounts to a bank having to do whatever it deems fit in order to cover it's backside. Wake up FD, it's far easier to switch bank accounts than it is to rebuild personal tax account records!