Hello,
I have checked your requirements, I can easily help you to customize WordPress plugin "EventON" including:
- a counter of categorized events callable from any page by shortcode
- submitting only to certain event_type on shortcode
- showing only certain event_type(s) on shortcode
As I am highly skilled Wordpress Plugin Developer and can handle any task/issue related to wordpress plugin.
As per your requirements, I have some questions. Please message me once you're available.
Regards;