Not receiving emails

I have an old ntlworld emails address, which I seldom use nowadays since it was compromised, though. I do use it as a back-up on occasions. I did still get some emails going to this address, but this seems to have stopped. Also, if I send an email this address, the emails don't appear. Interestingly, in resetting my password for this chat, the email to confirm my ID arrived. Also, I can send emails from this address.

I have changed the password to see if this helps, but alas, no.