Apple devices running the iOS 10 and 11 will no longer have access to WhatsApp. There are multiple reports on WhatsApp regarding the app's end of support for older iOS versions, particularly with iOS 10 and iOS 11.
According to a report from WABetaInfo, WhatsApp has always dropped support for some versions of Android and iOS, to let the company roll out certain functions that might not work on old operating systems. 📲 WhatsApp To Drop Support for These Old iPhones After October 24, 2022: Report.