Question about Micro Merlin X4

According to the manufacturer's website, the vehicle is approved for road use. Why do they write otherwise? Brief overview The suspension long-distance runner approved for road use! <-- Art. No. EM0019 Weight 11 kg Motor 250W / 300W / 400W / 500W Battery 36 V / 7,8Ah / 280 Wh Speed max. 25 km/h Range 25 km Charging time 180 minutes Light Front light & rear light Type of wheels 200mm rubber Age group 16+ Load capacity 100 kg Handlebar height 1 90 cm Handlebar height 2 108 cm Length of deck 43 cm