Thanks @Gunner @PeteKnight at the end it’s happy ending device successfully connect as engineer I need to stay on the field, the issue was it wasn’t getting connected to custom port 8088 where I had programmed earlier and was working fine but faced issue recently, on changing to default 8080 thing on track, so blynk doesn’t allow changing port in latest release ? Thanks once again
Blynk app Showing device offline using in local server works fine with blynk default parameters fine as worked with other program
You can custom design WAN side port via port forwarding, but the Local Server requires 8080 (on the LAN side).
Marking this topic as solved.