I had Cayenne installed on my Pi3(Jessie/64GB) with a simple project running reasonably happily and I could connect to it using the beta Android app.
The only serious issue was that the Pi3 was running hot - I mean VERY hot - 97 DegC at 5% - way above its safe operating range. So I backed up the SD card and transferred it to a Pi2 B. When I tried to connect to Cayenne from the browser on the Pi or the android app the installation is shown but it is offline.
I returned the card to the Pi3 but no luck - the same thing was now happening on that too. I tried a new card with a clean install of Jessie in the Pi2. When I tried to install Cayenne it just showed the old installation which I couldn’t delete from either the browser or Android.
I don’t want to create a new account so what is the best way of clearing the old instance of Cayenne and installing it afresh on the new card?