Hello, the calculate button in the EFB does nothing when I am clicking on it to calculate the takeoff speed and Flex Temp. All inputs are filled in (RWY length, RWY HDG, Wind, Temp, QNH, Takeoff weight, flaps 15/15, A/I OFF, A/C ON). I am using Metric System (Kgs, °C, HPa, m), also tried with imperial system (Lbs, °F, inchesHG, Ft) and calculate button does not work either.