Emails are not sending

The wp_mail() function is unreliable on many hosts. Install  Postman or another SMTP plugin to use a more reliable mail service.

Email signups are not working

Make sure your email form does not have a required field that is not displayed. For example, if you required first and last name, it will not work. Change your form to only require email, the rest of the fields optional. If you need extra fields, use the custom HTML form option.