<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>
Re: Would a 3rd party router plus Openreach modem offer a more stable connection?
The chances of two SH2s being faulty in the same way is pretty remote, so I doubt replacing will help. Hopefully the noise is the issue & will be promptly resolved.