Thanks! Will pass your suggestion to my brother who may proceed with the repair.

Sadly, I am getting the warning even whitelisting YouTube on Ghostry. I have to turn off Ghostry altogether to do away with the warning.

That’s strange. Try 192.168.1.100

Adding proxy is a native feature in WhatsApp.

1. Go to Settings > Storage and Data > Proxy.
2. Add 127.0.0.1 in the IP address and add a random port too.
3. When you want to disconnect WhatsApp from the internet, just turn on the proxy. To reconnect, turn it off.

Just add proxy to something that leads to nowhere to block WhatsApp from connecting anywhere.