Let's try this full direct path.
/usr/local/bin/php /home/hosting user name/public_html/folder where oxwall is installed/oxwall/ow_cron/run.php
So if SMTP is disabled, that means something is wrong with the mail server. You need to contact your hosting provider Brian to resolve the issue with the verification e-mails
If you interface of cron configuration differs from the screenshot Darryl sent, it will be better if you contact your hosting provider to assist you with cron configuration.