PenciDesign Supporter replied
Hi,
I've checked your site, the problem is that your server doesn't enable the mail functions.
Please contact your hosting supporter and request they turn on mailing functions or config the WP SMTP with Google by following the document at this link: https://wpmailsmtp.com/docs/how-to-set-up-the-gmail-mailer-in-wp-mail-smtp/
Regards,
PenciDesign.
