Fix: The app is trying to reach an API endpoint that uses TLS 1.3. Android 4.4.2 only supports TLS 1.0/1.1. You need to root your phone and install a library called "TLS 1.2 Patcher" – an advanced hack.

Espero que esta información te sea útil. ¡Buena suerte!

This is the most critical section. Using WhatsApp on Android 4.4.2 is a security risk.

Fix: Clear cache. Go to Settings > Apps > WhatsApp > Clear Cache (not clear data). If that fails, your processor (CPU) is too old. Some single-core ARMv6 CPUs never worked well with WhatsApp.