There are a couple of reasons why this could happen:
1. It’s in a folder you haven’t checked (spam, junk, etc)
2. The email has been successfully delivered to your mail server but something on your end is preventing that from getting to you (some anti-virus programs catch those before they get to your inbox)
3. You never verified your account and therefore can not reset your password (if you can’t find that verification email please try signing up again here to trigger that: https://signnow.com/signup)
The subject of the email is “ – Email Verification.” and it’s coming from firstname.lastname@example.org if you want to do a search in your email account.