Yes, I have certainly compiled and loaded new sketches.
However…something triggered for me. I did a search for BlynkSimpleEsp8266.h in the libraries folder and discovered that the Cayenne libraries have a copy of an old Blynk library and it seems that was the version the Arduino IDE was using. I switched from Cayenne to Blynk as Cayenne was super buggy. I removed the cayenne libraries, recompiled and voila…now connecting to blynk-cloud.com.
So for anyone else who has Cayenne libraries installed this could be your problem as well.
Thanks for you help and patience @Gunner!