Hi.
I was able to register an user, but It ended with a SMTP error :
SMTP Error: Could not connect to SMTP host.
Warning: Cannot modify header information - headers already sent by (output started at /home/content/35/6852235/html/freeads4/oc-includes/phpmailer/class.phpmailer.php:586) in /home/content/35/6852235/html/freeads4/oc-includes/osclass/utils.php on line 36
This is because you didn't have a SMTP Server nor configure it. You could configure your mail server from the admin panel, if you don't have access to a custom email server, you could use GMail (Google's one) for that purpouse, but be aware that GMail option is only valid for a small amount of emails/hour (good if you're starting or have a small website).