i have the same problem.
i have built a home automation system, the lights can be turned on / off from the blynk app, but also from physical buttons in the rooms. when the arduino is connected to the network, everything works fine and reliable (i can control the lights from my phone and also with the physical buttons).
the problem is, when the arduino is not connected to the network (for example the network cable is unplugged), the system is not working at all, i can not even use the physical buttons.
system hangs in the setup(), at the Blynk.begin(auth); function: waits ~60 seconds, then restarts the arduino, and everything begins again. it never enters in the main loop() function.
i would like to bypass somehow this problem: if no internet connection, than execute loop(), without blynk.
also there is another problem, if i unplug the network cable during loop() runtime, after a while the program hangs, it not responds to physical buttons. i must plug the cable, or reset the arduino.
i use arduino adk + enc28j60 + uipethernet + blynk.
// LIBRARY #include <UIPEthernet.h> #include <BlynkSimpleUIPEthernet.h>
thank you for your support!