The readmore button leads to the event detail view. Now at lot of your modules (like e.g. banner) are assigned in the menu assign to "all pages". So your event detail view is at the bottom of your page.
Better to choose "only on the pages selected", then you unselect all and then you select only the wanted menues.
Alternatively you chose a menu for a single event for a virtual event and you hide it for public. Then you select "only on the pages selected", then you select all and unselect the single event page.
"All" is not always "all"