Hi after so many hours I’ve found the issue. Don’t use your post type slug name as page name otherwise you won’t be able to update a thing in your page edit box. Like I’ve changed the url of your events page https://www.mahea.com/eventsss/ & it’s working. You’ve put events as slug of the single event page & also trying to load all the events with same slug for which it was not working. Same goes for the collection page also. Hopefully this will help you thanks.