Email not sent on registration

I'm new to Joomla and Event Management, so excuse me if this is a dim question.

I've set up some test events - all good. I've turned on "Send Invoice to Registrants", but no invoice is being sent when registration is completed.

I'm having quite a time formatting the invoice - changes are sticking after saving. When i go back in, the changes (e.g. change in font size) are not remaining.

What am i doing wrong?

Charlie

Hi Charlie

Could you please submit a support ticket sending us super admin account of your sit so that we can check to see why the invoice is not being sent?

Tuan