This is fixed. I have gone through the Blynk cloud network connection and all the pin config on the Blynk.
Issue is If OG is reset and Blynk is open on iOS, Blynk will not get a IP address from the OG. There seems to some funny code here and I suggest OG code to ping Blynk server with IP info every 15 min or have a push icon from the OG to Blynk via the browser.
When I closed the Blynk on iOS and then reload the app it works and now IP address can be seen on the Blynk app.