Relay master switch and Blynk Offline problem

You clearly didn’t read the bit of my tutorial that explained that one timer object is sufficient for 16 timers.

Blynk won’t work if you use delays. The Blynk library requires constant communication with the Blynk server and the delay() command blocks code execution. Stop using them.

If you need a non-blocking timer then you can use a timeout timer, as described in my tutorial.

You also need to sort-out your logEvent notifications.
You should read this…