On your android, download this app:
https://play.google.com/store/apps/details?id=dns.hosts.server.change
set a dns of your choice and create a VPN.
With “Proxy,VPN,TOR” and “Literal IP Addresses” disabled, pcwrt can’t establish a connection.
Try: Just send a simple whatsapp message and you will se that pcwrt can’t send it, or, sometimes, will send it after 15, 20 minutes.
With the data mobile, i have no problem. I tested it on Android 9.