Thank you BTW
Glad I could help.
Removing the Cayenne library was the best idea ever for this newbie !!
I was trying to get the Arduino example working for several hours…
And indeed I tried a project with Cayenne earlier this week, which caused the library trouble.
But what exactly have Blynk and Cayenne in common ?
How are they related ? I am confused…
The way they work looks the same.
Cayene uses Blynk libraries and server as they are open-source.