<p>See our <a href="https://www.bt.com/help/broadband/bt-cloud/getting-set-up/download-or-access-files/how-do-i-download-files--folders-and-devices-from-bt-cloud-">help page</a> for further information.</p>
Yes, mine played up with a BCC list. It's now corrected itself, so keep trying. Or split your list into 2 or 3 separate ones as I suspect that I had too many addresses originally.