While getting the app to boot up is a victory, using WhatsApp on iOS 7.1.2 comes with strict technical caveats:
If you previously owned WhatsApp on your Apple ID back when iOS 7 was supported, you might be able to download it directly without a third-party IPA: Open the on your iOS 7.1.2 device. Navigate to the Purchased tab. Search for WhatsApp . Tap the Cloud icon . download whatsapp ipa ios 712 top