Only apache warning so nothing serious .... Maybe this can be fixed later...

Backend log: PHP Warning:  Undefined variable $mail_block in /home/u4****p*****5/domains/***.be/public_html/oc-content/plugins/spam/functions.php on line 282\n, referer: https://****.be/item/edit/389/

@mwindey
Thanks, just add:
$mail_block = false;
i.e. on line 110.

@MB Themes

  thanks again