Recently a number of deletion notification emails have bounced back because the addresses shown in the member record have been incorrect.
For some of those members, the PM I then sent was not opened because the member did not respond to the red INBOX at the top left of the Home page.
To check your email address on the site, click on the Edit Account link in the User Menu at the top left of the Home page.
To find out more about PMs, review the FAQ titled