This situation typically occurs on vehicles with a small fuel tank ("light vehicles"), where the data is delivered to the Mapon platform in liters instead of percentages.
Many users forget to specify the fuel tank capacity because fuel level data is displayed as soon as the vehicle starts moving. However, Mapon fuel solution requires that the fuel tank capacity always be entered if the fuel level data source is the CAN bus.
🚨 If you do not specify the vehicle's fuel tank capacity in Vehicle Settings, under the Technical Information tab, then fuel-ups less than 40 liters will not be displayed, or no fuel will be displayed at all.