I have changed my code as you and the article has advised and everything is running smoothly. Thanks again.
Now I’m investigating the possibility of implementing some energy saving techniques associated with putting my controller in its sleep mode for any duration between 100ms to 500ms, I am still deciding. However, my concern is that whilst in sleep mode, the execution of the code in my void loop will be halted. I think running a timer interrupt to run the Blynk.run and timer.run code should solve this problem. Is there a minimum frequency that these two commands need to be executed per second to avoid any problems ? Thanks in advance.