@dgrosen the Pi Camera V1.3 is not really supported any more Camera v1.3 not detected - Request Help - OpenFlexure Forum although the instructions do still say that it would work. The OP in that previous thread says it was not detected, you seem to be able to get it to work, but not calibrate. Which version of the server are you on? If it is not the pre-release, then the V2 camera also sometimes gets confused and calibrates to a green screen. You will need to manually delete the calibration as it is a state that it does not recover from with just re-running the recalibration. Make sure that there is plenty of light, low light seems to reproduce the issue quite consistently.
I don’t know about the network error.