Can you ping the rpi?
Then You need to install the Tightvnc server onto your rpi and use a vnc viewer on your pc/ipad to gain remote access to rpi
Try to get remote access before installing Cayenne then you get all the basics working before layering software packages
I’ve installed the tightvnc and it work’s if I try to connect using LAN connection and internal IP.
If I try to connect througth mydevices app doesn’t work
for me the issue is still alive.
david