Hi Julie
I assume you say the email is blocked because when you try password recovery at https://myaccount.talktalk.co.uk/forgotdetails/index/webmailindex You enter the e-mail address. Tick the I'm not a robot and select the continue button. If that is when you see a red bordered box next to the e-mail address that says "This email address is currently blocked" then you'll need help to get that email address unblocked / unsuspended.
The email address will have been suspended because the email system has detected suspicious activity. It could just be repeated tries at guessing the password or the account has been compromised or the password is so weak that it puts the email account at risk.
If the above is what's happening then a fault ticket will be needed so the email admins are authorised to unblock the email address.
I'll alert the TalkTalk Community team for you.
In the meantime, you may wish to check the devices that you use for email and scan them with anti-malware / anti-virus software to make sure that they've not been compromised with password capturing malware.
You can also check your email address at haveibeenpwned.com to see if it's registered at any site that's had a known data breach. If it is not listed then that's good news. But if it is listed then that may help you to protect other online sites where you've registered the email address.
Let us know if you find anything suspicious but don't reveal any personal details.
