Frustrating: Could not manually add attendees.

I would be significantly less frustrated if you were clear about your features.

I see no indication in the normal plugin page, nor your sales page, NOR YOUR SUPPORT DOCUMENTATION, that adding an attendee to an event is one of your premium features.

You want to know how I found the solution?

Plugin File Editor -> Eventin -> Core -> Attendee -> cpt.php
wp-event-solution/core/attendee/cpt.php?

Lines 107 – 114

// Can't create manual attendee
if ( !class_exists('Wpeventin_Pro') ) {

   $args['capabilities'] = array(
     'create_posts'    => 'do_not_allow', // Removes support for the "Add New" 
   );
			
}

Commenting it out worked to literally solve the issue.

I’m all about paying for features. But don’t waste 5-6 hours of my debugging time because you don’t want to advertise what people have to pay for.

Shameful.