Suggest that still support older Android versions. Downloading WhatsApp on Android 4.4 .... : r/dumbphones
If you are using a device like the Samsung Galaxy S4, Note 3, or an early Motorola Moto G that is capped at 4.4.2, you have three main paths: Option A: Check for a System Update whatsapp for android 4.4.2
"The WhatsApp Conundrum: How to Use the Popular Messaging App on Android 4.4.2" Suggest that still support older Android versions