Did you change the username in the dlink to email@example.com. And if password needed then just use BT and see if that connects
But sounds like new hub required and you need to phone customer services
I forgot to change the username! I had reset the D-Link when I saw my connection dropping, but I forgot that the username also resets back to the default TalkTalk username. After changing it, I am back at 12Mbps download speeds and 900Kbps upload speeds. Thank you so much!
Unfortunately the BTHub4 is still poor and is just plain not working. I should point out it is a replacement router (replacing my previous router which had the exact same problem) which I received last week and which I connected for the first time yesterday (when my D-Link stopped working). It seems the issue is with all BTHub4 routers, not just this specfic one.
Oh well, at least the main problem is fixed. Thanks again for your help!
Dlink working well for you so forget the hh4