ESP work offline

@Gunner I tagged on the end of this topic because the routine posted by @Costas works just as I want as a standalone sketch, but for some unknown reason I just cannot successfully implement it into my main project.

I have a topic that I started explaining my connection issues here in China, maybe I should just retire back to good old England where the Internet maybe faster and more stable!

https://community.blynk.cc/t/login-time-out-and-heartbeat/28548/11

I used your code when I started this project, then I was using a Mega2560 because of the available multiple serial ports. Now I’ve moved over to a NodeMCU with software serial, I came across this topic and thought I would give it a try. If I cannot find an answer then I will try your version with the NodeMCU.

Richard