Hey Dazed,
Great suggestions from Michael and Sam above, it’s probably worth taking the time to verify that the camera board is working before troubleshooting any further.
In any case, I’d probably run a “sudo raspi-config” command at the terminal and ensure your Camera is enabled in that setup view (it should be by default if you are running the latest version of OctoPi). Apart from that, re-double check the flex cable connections between your camera board and Pi. While you are at it, check the small cable connector on the Pi Board itself (it can come loose and prevent the camera from working).
Let us know how you get on.
