Register for an event: email not sent to admin

Hi

In addition to what I desribed in my last thread, I have discovered another issue.

After submitting the form to attend an event, no email is sent to the admin email address entered for this event via backend in the field “registration email/URL”.

I have also installed and activated MailPoet now to avoid sending emails over default PHP mail function.

But it is still not working – what I am doing wrong?
Please advice, thanks a lot.

Best,
Michael