This is good plugin and i am using to develop site like meetup. I am extending this plugin features as per requirement. but one very simple feature was expected to show all meetup listing. How can we display all events. This is basic feature that not provided in plugin. but overall other part is good.
Have you heard of any date/time issue?
The result obviously ending with missing parameters in the output.
I have tested this on three diffent pages all on WP 4.7.4.
Working just fine now. Will perform some devel enhancements, etc.
If you get 404 when viewing your first page it may be a cache issue.
I got 404 when attempting view of main meetup landing page /meetup/test-meetup. I prefer Post Name for permalink. Switching to Plain permalink /?meetup=test-meetup it renders meetup landing page with Event Details and tabs. Yay!!! But, all tabs Speakers, Schedule, Sponsors, Attendees, Gallery all were 404.
I simply switched back to my original Post Name from Plain permalink. I waited several minutes and tried it again and Yureka!!! Everything now renders.