If you follow the below link in Safari (Mac Desktop), any spread that contains an ad repositions itself in the top left corner of the screen instead of centered. Additionally, in all browsers, the videos all autostart at the same time when the publication opens for the first time. Anyone have any ideas?

https://indd.adobe.com/view/fc04e8a4-61f4-4c44-b306-0a01723b11ed