I know this is an old comment, but is the gcode viewer still working for you? If so, could you post your yaml/setup for it?
I have the Pretty GCode plugin installed on Octoprint and it shows correctly there. Full screen URL does too, but when I visit from incognito it brings up the sign-in page. I’m using MQTT Octoprint - I’ve been able to pull in everything else (axis controls, power controls, stl viewer, etc) into HA, so this is the last thing I’m trying to get working.
I’ve added the IP to a webpage card but it shows up blank.
I did try that, I haven’t rebooted Octoprint since I’m in the middle of a print, so I’m guessing that’s why I can’t see the sign-in page. I’m also going to try installing this to see if it auto logs me in once I can see it in HA: OctoPrint-AutoLoginConfig