I just tested my W5500 with Arduino web server and web client sample sketches and seems to work very well.
I tested also my CC3000, this shield seem hang Arduino, but I would want to do more testing with this (even if the Arduino sample sketches seems to work).
Finally I try my ESP8266MOD… Eureka! this works with both custom and cloud server! No errors at all.
So… Now I have restricted the circle…
- my blynk server is OK.
- my network and internet connection is OK.
Maybe the blynk W5500 library could have some problem?
Maybe my CC3000 shield could have a problem.