WhatsApp not showing under iCloud to turn on
I'm trying to backup my WhatsApp to my iCloud but it says I'm not signed in. I read everywhere to go under Settings > iCloud and to turn on WhatsApp but it doesn't even show me the WhatsApp icon under the iCloud section. What do I do? How can I transfer my WhatsApp to my new iphone? And why is the app not showing under iCloud? Thanks!