Hi, nikola thanks for answering me , my problem is that nobody receive any notification, client dont , admin dont , worker dont , may be i just thought we receive notifications after payments,cause i didnt try to pay on paypal site , but i don t think so, usually we receive notifications after submit . am i right? here's the log error i get on tools page ------------ ERROR #1 ------------ TYPE: MAIL ERRORS: {"wp_mail_failed":["You must provide at least one recipient email address."]} ERRORS_DATA: {"wp_mail_failed":{"to":[""],"subject":"Nouvelle Reservation 13","message":"<p>Votre r&eacute;s&eacute;rvation est annul&eacute;e car nous ne pouvons assur&eacute; votre prise en charge dans ce cr&eacute;neau horraire,&nbsp;<\/p>\n<p>merci de &nbsp;choisir un autre horaire.<\/p>\n<p>cordialement<\/p>\n<p><strong>juin 12, 2017<\/strong><\/p>\n<p><strong>13<\/strong><\/p>\n<p><strong><span id=\"custom-tags\"><\/span><\/strong><\/p>\n<p><strong><span id=\"custom-tags\"><\/span><\/strong><\/p>\n<p><strong><span id=\"custom-tags\"><\/span><\/strong><\/p>\n<p><strong><span id=\"custom-tags\"><\/span><\/strong><\/p>\n<p><strong><span id=\"custom-tags\"><\/span><\/strong><\/p>\n<p><strong><span id=\"custom-tags\"><\/span><\/strong><\/p>\n<p><strong>50.00<\/strong><\/p>","headers":[],"attachments":[],"phpmailer_exception_code":2}} ---------- ERROR #1 END ---------- waiting for issue thank you very much