I can't pair my phone app with my dirt bike anymore, it was working very well a week ago, had to pull the battery to lift it over a barrier, re-installed and I'm stuck at 15 mph. Been online with Segway help many times, they can't be convinced that it's the bike. Tried all of their suggestions, tried 4 different phones, everything I could think of. Anybody been through this? Stunning that Segway built in such a silly Achilles Heel to an otherwise amazing product.