I take it that you have checked that the lens is clean and dry?
Is the problem happening with the Lab App or the Consumer App or both?
May I suggest that you make two check scans:-
a) With SCiO Lab App: Keep the SCiO in the calibration holder, and scan the calibration surface, but as a normal scan.
b) Open the new Consumer App: Under painkillers. Use the solids sampling cup, with a paracetamol.
If these two still fail to give a valid scan you should email Dev for help.
