The emailing system of your website is really reliable and rarely gives problems.
If you can’t find a new user log in email or a lost/forgotten password reset email, the most likely reason will be because the email has been filtered out at your end.
If you still can’t find the email even after searching all areas of your inbox, it’s likely that the email has been filtered at a higher level at your mail server by your email service provider.
If this is the case, the quickest way to reset your password is to ask an Admin/SLT user to do a direct password reset: