Fortunately, there is a workaround. By using an , you can attempt to run an older version of the app on your iOS 9.3.5 device. This guide explains how to download the Instagram IPA for free and install it safely.

If you are on an iPad, change the filter in the top-left corner from "iPad Only" to "iPhone Only" Search for "Instagram" in the list of purchased apps. Download Compatible Version Cloud Icon

Go to the tab. If you are on an iPad, switch the filter from "iPad Apps" to "iPhone Apps" . Search for Instagram and tap the cloud icon .