I've found the solution - with help from QB support. Firstly, I realised that my firewall was preventing a direct access to my bank when reconnecting, so I paused by banking security on my ESET. I could then access the reconnection. It still didn't fully work at that stage however so when talking to QB support over the phone, they recommended disconnecting both of my accounts and reconnecting both from scratch. I did this and it has worked. Phew. Thanks for your help.
