Why Section Feed does not work on Internet Explorer 11?
Section Feed is an app that has been designed and developed with performance and simplicity in mind. In order to reduce the performance impact to the minimum, we made the choice to only target modern browsers, excluding outdated browsers such as Internet Explorer 11 and below. On such browsers, the Instagram section will simply be removed and not visible.
Please note that Internet Explorer 11 (and below) is an outdated browser whose market share is lower than 1%. It does not receive any security updates anymore by Microsoft, so we would strongly recommend you to not use this browser anymore and upgrade to a safer, more performance browser (such as Edge or Chrome).