Confirmation email and auto-confirm not working

Hi, today I became a premium member mostly because of the Appointments+ plugin. After playing a bit with it and mostly having everything working, I found out that when I make an appointment (even for free services) I don’t receive the confirmation emails (neither client or admin). I must go manually to each appointment in pending status and tick the resend option. There’s another error with the resend, because it tells you that no changes have been made…

I have also tested activating the Auto-confirm free appointments in the settings, but that doesn’t work either, as they still show as pending.

What’s the point of making reservations if the client or admin don’t receive a notification that it has been made?

Perhaps there’s something I’m missing. Thanks!