Hi
I have configured the plugin on this site: https://www.kunst7-kurse.ch/blog/blog-1 and everything is working fine except the user notification.
I have enabled it in the settings but no emails get sent to the users.
Screenshot of settings are attached.

Does it have to do something with CronJobs? Because I don't exactly know what this is or how to set it up.

Thank you for your help.
Cheers,
Sandro