Silly question time, but have you rebooted your router? I had to on my swap over day.
You are in the staff's queue for a response.
For a quicker reply can you please ensure you have your personal information up to date in your profile including your TalkTalk landline phone number so your account can be traced. Link here - https://community.talktalk.co.uk/t5/user/myprofilepage/tab/personal-profile:personal-info
If you are unsure of your phone number, you can find this in My Account or dial 17070 from your landline phone and this will confirm the number for you.
Can you please update your community profile to include your:
We'll then look into this further. Please do not post this information on this thread. Once you've updated your profile please post in your topic to confirm it's updated.