Pushover Notification – User Key vs App Token

I’m testing the notifications by using an invalid SMTP port. The “connection refused” is showing up in the email logs but I was not getting notified by Pushover of the failure.

I had only entered my User Key. After creating an App token and entering that as well, I am finally getting notifications.

Are both fields required? If so, the plugin lets you save without entering both. Or is it possible that the User Key isn’t working?

At any rate, thank you for an amazing plugging. Donation coming.