Sometimes mails can be directed to the Spam or Junk folders, for no reason and even though they shouldn't be treated as such.
Make sure you search through all those folders thoroughly and see if the emails you were expecting ended up there.
Maybe your email address "refuses" to receive emails.
To test and resolve this issue, try sending an e-mail from another account (account A) to your own account (account B) and see what happens.
Did the e-mail message bounce (failed to send)? If it did, you will receive a return message, on account A that the delivery wasn't successful, as well as possible reasons for that.
You can also check your e-mail address's validity here.
If your email address is valid and it still "refuses" new emails, check out the emails don't get delivered / bounce solutions.
If you have entered incorrect login details, or if you have changed your password but you have forgotten to update the login details in the email app or web browser, you definitely won't be able to receive emails.
Make sure that you are using correct account credentials and carefully type your username and password to log in.
Also, make sure that you have entered the correct details for the:
Note: Make sure to check/tick the My SMTP server requires authentication check box.
You may have accidentally activated an email filter which filtered your emails, which explains the reason you are not able to see particular emails.
Check your email filters and make sure that they are set up correctly.
Note: If you are not sure how to find the filters (if any), check the email-service provider's help page.
If your domain/hosting has expired, it will be deactivated and you will not be able to use it until you renew it.
Visit your domain registrator/hosting provider and renew your plan in order to use their services again.
If you don’t receive the email in the next 2 minutes please check your junk folder, and add [email protected] to your safe sender list.