Before using this Element, you need to connect your Instagram account in Options > Avada Builder Elements > Instagram. Here, you will see a Connect With Instagram button. This opens Instagram ina new tab, where you can connect your feed to your website.
There is also a global option to determine how often you check for new posts. Set this as you prefer. You can choose from Every 30 minutes, Every Hour, Every 6 Hours, Every 12 Hours, or Every Day. There is also a Reset instagram Caches option if you are having cache issues with your feed.