I'll request new Reset details be set up for you. TalkTalk will verify you as the registered email user and set up Reset details so you can get the password changed.
So that we can proceed, please update your Community Profile Personal Information (Click here) to include your name, current landline and mobile contact 'phone numbers and address with postcode (location) then scroll down to Private notes and add the email address and Save changes.
In due course a TalkTalk Community Team member will reply here and then Community Personal Message you to verify you as the mail user; so be prepared to provide on request to TT Staff only:
When you're verified the Reset details will be set up within 48 hours allowing you to set your own password via the Forgotten your Password journey. Make sure the password is ultra-strong and unique to the mailbox.