Discover drive app ridiculous calcs

The vitality drive is becoming more ridiculous every day. I drive according to the guidelines, only for the app to calculate daily points incorrectly. I have send numerous queries to discovery via the app but no reply. I am frustrated beyond believe and considering moving my insurance. If the app discovery have can't do simple calculations. Even my toddlers agree that ifyou have 25 and subtract 10 you still havea lot more than 0. Or that 25 less 3 is more than 15. Call me, cottect this !!!!!! Leaves rhe question of what else you mess up?