Hi, when connecting the Sumoeye sensor to Ev3, the yellow "!" mark is shown next to the Sumoeye block, despite the sample program is still running. Any idea?BTW, where could I find the proper document for the use of this sensor on EV3, e.g. how the dual range is used? the raw number measured by the block does not seem to reflect the distance, the measurement range seems to be much less than 20cm too. The left zone ("2") seems to have range less than 10cm, while the front and right have 15cm range, is the sensor defected? pls advise.