Ha ha ha the W5500
I was thinking more about the Arduino Due
Heck, I wish I had one… it is a much faster version of the Mega (32 bit), more memory and with 3.3v GPIO, it merges better with combined ESP and related sensor setups. And a metric butt ton of GPIO
Again, that is basically just restarting the Arduino. pressing the reset button will do the same thing.
There are Googleble ways to reset Arduinos via code. So, as long as you have coded yours to keep running, even without blynk connection, then you can have a running check and/or timer that if after x amount of time with no Blynk connection, then it will process a reset command.