Leo. Not that im aware of. I'd take it back if its not too difficult. Just to clarify, these units dont measure the remaining filament, rather the firmware guesses how much is left in there based on the size and density of the models you have printed with it. Is it possible you left the cartridge in the slot while printing with Bulk filament? This would have reduced the available filament on the chip.
Is it saying its completely empty - like nothing left at all?
Dan