You are using TLS (port 587) but specifying SSL port (465). Change the port to 587 and try.
In fact, the tutorial you are following specifically says:
SMTP Port: Enter 587 (if during testing you encounter errors then try port 25 or 465. The error EOF caught while checking if connected is a good indication that the port number needs changing.
[“Port”]=>
string(3) “465”
[“Helo”]=>
string(0) “”
[“SMTPSecure”]=>
string(3) “tls”
[“SMTPAutoTLS”]=>
