Since WhatsApp is dead on Gingerbread, consider these apps which may still have old-compatible versions:
To download WhatsApp for Android 2.3.3 APK, you'll need to find a reliable source that hosts the old APK file. However, we must emphasize that downloading APK files from third-party sources can pose risks to your device's security. whatsapp for android 2.3 3 apk download old version