Thank you for the quick reply,
Below you will find a screenshot of my sendmail.php.
https://drive.google.com/file/d/1cS66XZUPRn2gvV4fpw__w_hwTJca7Ldn/view?usp=sharing
the url is abetterbarrier.com/index2.html
Currently abetterbarrier.com is a landing page. /index2.html has been my edited page.
Thank you again for the quick reply.