This looks like a calibration issue, a different version from the green thread that you have also posted in.
It would be worth trying the recent beta release of the software Software Beta release - Announcements - OpenFlexure Forum. The calibration function has had a major revision and does not have these failure modes that the old version had.
You can revert to the normal release afterwards with sudo ofm upgrade to get back onto the stable version. The calibration should remain when you revert.
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